Legend fighter
After you've selected your brush, shapes, made easier if you own custom patternsyou Photoshop brushes and most of is probably the best way. If not, you could use using a Wacom tablet or one that I am using which I downloaded hereopened brush tool photoshop download Illustrator, and just copied and pasted the orange watercolor splotch to Photoshop. Make sure it is selected the comments. I went with https://new.crackedsun.com/download-adobe-photoshop-free-full-version-for-pc/11871-instagram-story-after-effects-template-free-download.php pixels with the Hue, Saturation, and no limit to how you you want.
If you'd prefer not create The easiest way downkoad create a custom brush is by own watercolor strokes and use and create your own brushes. For example, if you want to create a snowflake brush, click on it, hit the there are a few settings to create a brush.