Compared to the pot, the flowers look very fake. Edges of the flower stems are not edged good, don't quite appear to be coming out of pot. Perhaps play around with dodge and burn to get a better result. I'll hold my vote.

better now ?

Um, no actually worse. Now it looks like they are part of the pot. I am assuming you did not save the PDF, meaning a file with all the layers used but if you did, try using polygonal lasso tool and edge the pot then select the flower stem layer and erase it that way. Just keep trying. You get it.

nice