diff --git a/croppa/main.py b/croppa/main.py
index 4942402..dfa0127 100644
--- a/croppa/main.py
+++ b/croppa/main.py
@@ -148,8 +148,12 @@ class ProjectView:
             cv2.putText(canvas, text, (text_x, text_y), font, 1.0, self.TEXT_COLOR, 2)
             return canvas
         
-        # Calculate layout
-        items_per_row = min(self.items_per_row, len(self.video_files))
+        # Calculate layout - dynamically determine items per row based on thumbnail size
+        # Calculate how many thumbnails can fit in the window width
+        available_width = self.window_width - self.THUMBNAIL_MARGIN  # Account for left margin
+        items_per_row = max(1, (available_width + self.THUMBNAIL_MARGIN) // (self.THUMBNAIL_SIZE[0] + self.THUMBNAIL_MARGIN))
+        items_per_row = min(items_per_row, len(self.video_files))  # Don't exceed number of videos
+        
         item_width = (self.window_width - (items_per_row + 1) * self.THUMBNAIL_MARGIN) // items_per_row
         thumbnail_width = min(item_width, self.THUMBNAIL_SIZE[0])
         thumbnail_height = int(thumbnail_width * self.THUMBNAIL_SIZE[1] / self.THUMBNAIL_SIZE[0])
@@ -225,11 +229,16 @@ class ProjectView:
                 cv2.putText(canvas, progress_text, (progress_text_x, text_y), 
                            cv2.FONT_HERSHEY_SIMPLEX, 0.4, self.TEXT_COLOR, 1)
         
+        # Calculate current items per row for display
+        available_width = self.window_width - self.THUMBNAIL_MARGIN
+        current_items_per_row = max(1, (available_width + self.THUMBNAIL_MARGIN) // (self.THUMBNAIL_SIZE[0] + self.THUMBNAIL_MARGIN))
+        current_items_per_row = min(current_items_per_row, len(self.video_files))
+        
         # Draw instructions
         instructions = [
             "Project View - Videos in current directory",
-            "WASD: Navigate | E: Open video | ESC: Back to editor",
-            f"Showing {len(self.video_files)} videos"
+            "WASD: Navigate | E: Open video | Q: Larger thumbnails | Y: Smaller thumbnails | ESC: Back to editor",
+            f"Showing {len(self.video_files)} videos | {current_items_per_row} per row | Thumbnail: {self.THUMBNAIL_SIZE[0]}x{self.THUMBNAIL_SIZE[1]}"
         ]
         
         for i, instruction in enumerate(instructions):
@@ -247,14 +256,24 @@ class ProjectView:
             if self.video_files and 0 <= self.selected_index < len(self.video_files):
                 return f"open_video:{self.video_files[self.selected_index]}"
         elif key == ord('w') or key == ord('W'):  # W - Up
-            if self.selected_index >= self.items_per_row:
-                self.selected_index -= self.items_per_row
+            # Calculate current items per row dynamically
+            available_width = self.window_width - self.THUMBNAIL_MARGIN
+            current_items_per_row = max(1, (available_width + self.THUMBNAIL_MARGIN) // (self.THUMBNAIL_SIZE[0] + self.THUMBNAIL_MARGIN))
+            current_items_per_row = min(current_items_per_row, len(self.video_files))
+            
+            if self.selected_index >= current_items_per_row:
+                self.selected_index -= current_items_per_row
             else:
                 self.selected_index = 0
             self._update_scroll()
         elif key == ord('s') or key == ord('S'):  # S - Down
-            if self.selected_index + self.items_per_row < len(self.video_files):
-                self.selected_index += self.items_per_row
+            # Calculate current items per row dynamically
+            available_width = self.window_width - self.THUMBNAIL_MARGIN
+            current_items_per_row = max(1, (available_width + self.THUMBNAIL_MARGIN) // (self.THUMBNAIL_SIZE[0] + self.THUMBNAIL_MARGIN))
+            current_items_per_row = min(current_items_per_row, len(self.video_files))
+            
+            if self.selected_index + current_items_per_row < len(self.video_files):
+                self.selected_index += current_items_per_row
             else:
                 self.selected_index = len(self.video_files) - 1
             self._update_scroll()
@@ -266,6 +285,20 @@ class ProjectView:
             if self.selected_index < len(self.video_files) - 1:
                 self.selected_index += 1
             self._update_scroll()
+        elif key == ord('q') or key == ord('Q'):  # Q - Make thumbnails LARGER
+            # Increase thumbnail size (maximum 300x225)
+            new_width = min(300, self.THUMBNAIL_SIZE[0] + 20)
+            new_height = int(new_width * self.THUMBNAIL_SIZE[1] / self.THUMBNAIL_SIZE[0])
+            self.THUMBNAIL_SIZE = (new_width, new_height)
+            self.ITEM_HEIGHT = self.THUMBNAIL_SIZE[1] + self.PROGRESS_BAR_HEIGHT + self.TEXT_HEIGHT + self.THUMBNAIL_MARGIN
+            print(f"Thumbnail size: {self.THUMBNAIL_SIZE}")
+        elif key == ord('y') or key == ord('Y'):  # Y - Make thumbnails SMALLER
+            # Decrease thumbnail size (minimum 100x75)
+            new_width = max(100, self.THUMBNAIL_SIZE[0] - 20)
+            new_height = int(new_width * self.THUMBNAIL_SIZE[1] / self.THUMBNAIL_SIZE[0])
+            self.THUMBNAIL_SIZE = (new_width, new_height)
+            self.ITEM_HEIGHT = self.THUMBNAIL_SIZE[1] + self.PROGRESS_BAR_HEIGHT + self.TEXT_HEIGHT + self.THUMBNAIL_MARGIN
+            print(f"Thumbnail size: {self.THUMBNAIL_SIZE}")
         
         return "none"
     
@@ -273,8 +306,12 @@ class ProjectView:
         """Update scroll offset based on selected item"""
         if not self.video_files:
             return
-            
-        items_per_row = min(self.items_per_row, len(self.video_files))
+        
+        # Calculate current items per row dynamically
+        available_width = self.window_width - self.THUMBNAIL_MARGIN
+        items_per_row = max(1, (available_width + self.THUMBNAIL_MARGIN) // (self.THUMBNAIL_SIZE[0] + self.THUMBNAIL_MARGIN))
+        items_per_row = min(items_per_row, len(self.video_files))
+        
         selected_row = self.selected_index // items_per_row
         visible_rows = max(1, self.window_height // self.ITEM_HEIGHT)