It is so fun to experiment with a new anything art! I think the reason I'm a "mixed media" artist is for exactly that: an excuse to play with something (anything) new.
Cathedral stained glass window stencils (set of 4). I put all four on one journal page, broke out my various watercolor sets and started playing.
I decided not to worry about color selection or brush or placement; just dip & paint.
I layered colors. And of course a dry brush works best.