About how big is that sketch? I've tried big (around 6-10 inches) medium (3-5") and small but can't really seem to bring everything together. I know I'm new to engraving and it takes a while to get the feel but it seems like the sketches should be on the smaller side. When I do that, I can never really get the detail to look clear. I can get the forms down pretty good (and that is my main goal) but fleshing out the drawing to where it doesn't look completely like a 7 year old did it has been hard.
From the exact center up, the tendrils seems to need more curvature; they're going straight out of the overlapping tendril and the beginning is difficult to determine. Just my opinion.