: Let the paper dry flat. As it dries, it will shrink and become taut like a drum, which prevents warping during your painting session. Alternatives to Stretching
: Place the damp sheet onto a flat, waterproof board (like plywood or plexiglass). Use water-activated gummed tape to secure all four edges. rayna_ivan_dyakov_kazhi_rayne_raina_i_ivan_dyak...
: Submerge the sheet in clean water. For standard 300gsm (140lb) paper, soak it for approximately 8 minutes. : Let the paper dry flat