To make two items look alike you should first upload one item to the widget gallery. Then you should go to the other item's edit mode and choose to assign the design of the first item, simply by clicking on the item whithin the gallery and pressing Done.
Step 1: Enter the edit mode of the widget you want the other widget to look like
Step 2: Go to the style tab ( in orange)
Step 3: Click Gallery (in pink)
step 4: Click 'Add Current to Gallery' at the bottom right corner of the new window (in green)
Step 5: Go to the edit mode of the widget you want to look like the other
Step 6: Go to the style tab (in orange - image above)
Step 7: Click Gallery (in pink - image above)
Step 8: Click the item you just uploaded (in blue).
Congratularions you have learned to use the widget gallery!