I'm in agreement with everyone else as far as doing a line drawing and then using colored pencils to work out your colors. Since you have EQ7 that should help (I understand, anyway, since I don't have one myself).
My only change (for anyone without a computer program to assist) would be to suggest that instead of just coloring directly on your line drawing, I might recommend you lightly "block in" some colors lightly over the drawing first. THEN go ahead and refine what colors you are going to use in each patch. That way your colors may "blend" together more successfully in the way you want them. I hope this makes sense to you. I don't know that I can explain it any more clearly (although I would be happy to try!).
Please let us see photos of your progress. This is one pattern I am anxious to work with myself. Good Luck!