Paul, I think your carving thus far is admirable for a beginner! Don't be too self critical of your work.
My critique of your work thus far is it is very soft. By that I mean you are obviously very comfortable with using dental bits in a rotary tool, however I would recommend you don't forget your micro chisel, gouges, files and xacto knife for sharp detail. I know the challenge at small scale, there is only so much detail you can achieve. I have found much success using an xacto knife for sharp detail on small scale carvings. That's because even micro gouges and chisels are too big for some cuts needed. Look into chip carving, its a technique to get depth with multiple cuts using a knife. I added the hair to my miniature bear on the NL ship by adding small lines with a xacto knife. I used the same technique on the trees for the bark, but they were achieved with two cuts at an angle (chip carving). Floral stuff is best done with a gouge for the main shape and an xacto for the veins in the leafs, etc. I am no expert myself, but I try to employ every tool available to me to achieve the proper geometry, there are no rules! I find my tiny rifler file to be invaluable on small scale stuff. I hope that helps and don't get discouraged, I think you have natural ability working in your favor, and once refined you will achieve great results. So hang in there and keep chiping away...pun intended.