Micro Mask Is Like Masking Tape In A Bottle. Just Apply It With A Brush, Let It Dry, And Cut It To Any Shape You Want With A Sharp-Pointed Knife. Peel Out The Part Where You Want To Paint, Leaving An Outer Stencil Mask, And Paint With The Method Of Your Choice. Just Don't Use A Water-Based Paint Over It Because Micro Mask Is Water Soluble, So Use Solvent-Based Paints. You Can Paint The Finest Detail You Can Cut With A Knife. Unlike Masking Tape That Can Allow Paint To Go Under It,Even The Most Difficult Designs Come Out Sharp And Clean With Micro Mask. "