just an idea, Mailin - think about extruding shapes from Kandinsky's paintings - i.e. imagine that you're looking at floor-plans when you look at his more abstract paintings - try and imagine the forms that would grow up from those 'floor plans' or blue-prints; the thing about many of Kandinsky's paintings is the clear geometries of his forms etc. Maybe think a bit 'cleaner' in terms of seeing structures and devising forms?
I really like 13 from this, the colours are great. Maybe try adding some depth to your next lot of thumbnails, these feel a bit flat. (I'm also guilty of this.)