I followed the tutorial by Chris Asbury http://chrisasbury.blogspot.fr/2013/02/creating-minimal-abstract-style-with.html and this is what I came up with. I used arplay poppy for bg paper, transfers from sun fun recolored.
Less is more! I'm about to post my attempt to use Chris's tutorial. I kept thinking it wasn't done. But I anything I added took away from rather than improved.