This video teaches the secrets of using acetate sheet to develop watercolor painting. Some tips of using acetate sheet to develop watercolor painting are: Acetate sheets will come to use mainly when painting flowers, nature, birds, animals, etc. (e.g., flower in this video). In this case first finish painting the flower and some easy parts. Now painting the weeds is difficult as you may find it tough to get it in the right area. Now you can place an acetate on top of your painting and draw the weeds wherever you wish. If you feel that you have painted something wrongly you can erase it with a tissue. After getting everything in the right place, remove the sheet and do your real painting.