I've been a commercial fly tyer for 15 years and for the last 4 have been tying mostly jigs. I've seen my share of bucktail... and the myriad of uses for it. You have a nice bucktail there. Congrats.

Just a few FYI tips: When dealing with bucktail you want the tails from a Northern Whitetail. If you do not want it to flare out (like in your pic) stick with working with the tail fibers from the middle to the tips. When you wrap tight the butt ends they will flare since they are thicker. If you want the tail to "streamline effect" tie in at the middle fibers and use pencil size stacks of hair. You may have to layer stacks of multiple clumps of hair clump instead of cutting out one big clump. Definitely comb out the underfur (with a flea comb) and when you tie the hair in use a loose wrap around all of the hair to "tighten" the clump before you overwrap for strength. When you whip finish coat about a 1/2 inch of the thread with zap-a-gap. It will soak into the thread fibers and you won't be able to pull out any of the hairs and keep your wraps from moving ontop of one another. Another great improvement I've found is when you really need to cinch down a BIG clump of bucktail try kevlar thread! It rocks and is virtually unbreakable. I use it a lot when working on jigs that will be thrown around rocky structure. My jigs body materials/thread seem to take the abuse a bit better when using kevlar.