I didn't use the watercolor technique here, just created my own mask by layering different brushes in different colours on top of each other, then merged them and clipped my photo to it, duplicated it and changed some blending modes, and voila....
Painted Letter Box Paper Pack No. 01)
Lightly Letter Box Paper Pack No. 02)
Classic Curled Photo Frames No. 01)
Thanks for looking: Janet