Baroque was in style from the mid 1600s' to around 1800 when Rococo become popular. So, the baroque style is most appropriate for your Lancaster. C and S scrolls, volutes, highly stylized leaves such as the acanthus leaf. Those are the basics for baroque styling. The lines are always either converging or diverging, there are no parallel lines in baroque. Note too that some late guns made in Lancaster show the Rococo influence, such as the G.S. Fainot rifle in our library.
Look in the ALR Virtual Library for examples of Lancaster style carving. The carvings of Jacob Dickert are a cut above imo.
There are a few tutorials on relief carving in our Tutorial section - worth a look for sure.
Draw C & S scrolls, volutes and leaf patterns until you have it down pat, and know every twist and turn. Come up with your personal variation based on the old masters, practice and practice drawing it. Then practice carving it on scrap maple that you have put a "gunstock like" curve on. If you don't have maple then use something else, I practiced on poplar, but it is a poor substitute. I did learn though.
dave