Number of posts : 13 Howrse Username : ef 123 Graphics program : Photoshop Elements 4, 5 & 6. CS, CS2 & CS3.
You can grab a base from here. Most people use photofilter for this.
Ok so open your base onto Photofilter. Then just pick some colors that you want to use and put a dark shade, lighter shade and so on. That way you won't go using every color on Photofilter
The you just smudge/blend the colors together. Don't use the giant brushes because then they get very blurry. Use the smaller ones, even though it takes more time to do.