ok I LOVE ALL OF YOUR COOKIES!!!! (bowing down)
whew, ok, now that that's out of the way
here's my suggestions...
similar to what others have said...
I think you should be more literal to the flowers on the pot, i.e. 5 petal flowers, and have different color centers like the pot.
I would also outline in white, or maybe in a complementary color??? (like a lighter or darker blue, e.g. the light blue outline on the bubbles of my Ariel cookie bouquet)
I would also make some of the flowers at least 50% larger to relate better to the scale of the pot. (some smaller ones would add interest too)
then I would make leaf cookies in the celeron (sp) light green like the pot.
I would try to make a grouping of 3-5 leaves on a single stick. I saw someone on here do that where the cookie bouquet had different flowers and leaf cookies made to look (realisitcally) like a real bouquet and I loved it!!!
can't wait to see what you come up with!!!