Bigmon,
I looked at the Ian Pratt rifle, and again at yours, and I have a few comments.
First off, I'm not a Rococco artist, or expert or anywhere near any of those things, so take what I say with a grain of salt. A big one.
The other guys are right, Rococco is typically not symmetrical which adds dynamics and life to the design. However, I have seen numerous examples of Fluer de lis designs at the tang or rr entry pipe that are pretty much symmetric. Albrecht seems to have done it, and by the looks of it, so did Ian Pratt.
I think the static look of your design comes from the balance of it. Notice that your leaf starts right at the termination of your tang moldings (and the two spirals), and it is a long oval. It feels like it comes from nowhere and is too long. Notice that the leaf covers about 2/3rds of the design.
If you look at Ian's design, he starts skinny skinny at the base of the leaf, like a vine, and the leaf grows from there. His design is likely even longer than yours, but the leaf itself is probably a similar size, just separated by the vine and bounded by two tendrils. I think that's what gives his design the balance and dynamic that yours may be missing.
What do you do about it? I don't think adding detail to the leaf will solve it entirely. You can't add wood, but you might be able to take some away.
You might try drawing on the raised portion of the existing design to either create a vine, or add some asymmetry to it by relieving/removing some of the leaf. Depends on how deeply you stabbed in the design. If you stabbed deeply, you will likely see the ghost of your old design.
I know this isn't a ready made solution, but I hope it helps you think about it.
Also, see what other folks may think about my suggestion as well. It's only my primitive thoughts.
Cheers,
Norm