I’ve tried a few methods and I can’t seem to get the same texture as pictures like this:

I used the edit>fill option and that isn’t even close to the effect I want.
What I am doing now is coloring regularly with a hard round brush and then duplicating the layer and using a texture brush and coloring over the picture, but I don’t think that is the right method. Do I just start my painting with a textured brush instead?
Please any tips would be appreciate. Is there a certain texture brush that I can use for this type of look.