To be honest, the effect for the sky was simple. I took a very crappy, kind of cheapo brush you could find anywhere, and just blotched it around. Made sure it was a brush I didn't love and just dryly blotted around paint. I didn't make it too wet because it would water down the texture. The technique is in the color I would think. Just using lots of white, blue, and grays when needed.
That one was 10"x15". I have another one I'm going to upload that was 20"x15" and also done in gouache. Right now, I'm doing a 20"x30" gouache painting for class. FUN TIMES.
To be honest, the effect for the sky was simple. I took a very crappy, kind of cheapo brush you could find anywhere, and just blotched it around. Made sure it was a brush I didn't love and just dryly blotted around paint. I didn't make it too wet because it would water down the texture. The technique is in the color I would think. Just using lots of white, blue, and grays when needed.