A little late, because of work and a slight cold, but here are the flattened versions of the Stickers and some Sticker Spray Presets for them: an LINK. One of the presets is new and shifts the luminance (the one named: Splat L-Shift), but the other three are identical to the presets for the 3D versions. I included the Splat L-Shift, because I thought it might work well with your watercolor themes.