This set was made by me, based on the brushes I usually use for animation background and illustration painting in Photoshop and is meant to be used as a stand-alone thing. You should be able to paint with only these brushes. The brushes are made to emulate the traditional way animation backgrounds are painted - layering opaque poster color paints with not-so-sharp brush strokes.
These brushes work the best on bigger canvas size files (such as Full HD files).
Feel free to use this set however you want, but when sharing attach the original info file and preferably link to this original download.
I will be updating the set with new and improved brushes as I use this set for my own work.
Thank you and have fun!