This April I am extremely packed with schedule to complete orders for May wedding. So I think the only craft class I could conduct will be decoupage.
Have a look at these two pictures. One of my students who attended the class chose this tiny motifs on the napkin and it took ages for her to cut the designs.
However once she was done cutting and ready to seal on the mug, it was just a breeze. Usually small designs take less time to paste on the surface compared to larger design. It will have less risk of air bubble and uneven coating.