I am unable to do GLaDOS and GLaDOS as a potato because Photoshop's brushes suck no matter what settings you have
Some parts of both normal GLaDOS and potato GLaDOS require smaller brushes in some parts, but any brushes smaller than 4 pixels look either A) too transparent, B) too aliased, or C) too blurry, this 4 pixel textured brush is the only one i've found that works well, but like i've said, these two GLaDOS pictures i have require smaller brushes in some parts because the 4 pixel brush is too big, and if i lower the size of the brush, then it becomes too transparent, trust me, it looks bad