I'm not a good example because I'm retired now, but I paint or sketch/draw almost daily. A lot of the time I just scribble things in my sketch book and I also have a small leather-bound permanent journal that I use for all things I like, including writings. I'd be tempted to say just paint/draw when the mood takes you. Don't make rules where none are needed.
Indeed, indeed, Repentance oft before, I swore---but was I sober when I swore?
And then and then came Spring, and Rose-in-hand, My thread-bare Penitence apieces tore.