Text is kinda bad and badly placed :|
Agreed, the flowers look odd especially the one on the top right.
I do not like the drop shadow nor do I think the border fits.
Colours contrast a bit too much on the lower right imo.
I think too much is going on here. Sometimes less is more.
However, I see the thought behind the sig. Perhaps you did all this shiz on purpose? Random weather/cloud formation idk.
Anyhow, I think the execution didn't really follow through the throught process.
Keep tryin!
+
Try a strongish texture over the final product. Film grains maybe? Or those lines on the screen from old movies.