Easy peasy but gives fantastic results. Put some water in a shallow pan, drop or 2 of dishsoap, drop in some acrylic paint, watercolors, reinkers, pearl ex,etc what ever is on hand. Carefully swirl a bit and lay paper face down in your water. Press very lightly and remove & let dry. You can usually get 2-3 pieces of paper from one mixture. Rinse out your container and try again. No 2 backgrounds will ever be the same.