diff --git a/app/service/design/items/pipelines/painting.py b/app/service/design/items/pipelines/painting.py
index b56d9cb..0fd2897 100644
--- a/app/service/design/items/pipelines/painting.py
+++ b/app/service/design/items/pipelines/painting.py
@@ -323,21 +323,13 @@ class PrintPainting(object):
     @staticmethod
     def stack_prin(print_background, pattern_image, rotate_image, start_y, y, start_x, x):
         temp_print = np.zeros((pattern_image.shape[0], pattern_image.shape[1], 3), dtype=np.uint8)
-
         temp_print[start_y:y + rotate_image.shape[0], start_x:x + rotate_image.shape[1]] = rotate_image
-
-        img2gray = cv2.cvtColor(print_background, cv2.COLOR_BGR2GRAY)
-
+        img2gray = cv2.cvtColor(temp_print, cv2.COLOR_BGR2GRAY)
         ret, mask_ = cv2.threshold(img2gray, 1, 255, cv2.THRESH_BINARY)
-
         mask_inv = cv2.bitwise_not(mask_)
-
-        img1_bg = cv2.bitwise_and(print_background, print_background, mask=mask_)
-
-        img2_fg = cv2.bitwise_and(temp_print, temp_print, mask=mask_inv)
-
+        img1_bg = cv2.bitwise_and(print_background, print_background, mask=mask_inv)
+        img2_fg = cv2.bitwise_and(temp_print, temp_print, mask=mask_)
         print_background = img1_bg + img2_fg
-
         return print_background
 
     def painting_collection(self, painting_dict, print_dict, print_trigger=False, is_single=False):