Apologies, I don't like being a critic cuz I always fear upsetting people and get guilt ridden, but your tail placement could use some work. Unless some special appendage w/ a special connection on the spine, tails are continuations of the spine and should flow down along and from inside the top of the ass and not stick out of the spine near perpendicular and above the ass.
Thanks, all! I went a really long time without posting on the original forums. I'm transitioning out of art as a career and pursuing a new degree in computer science, so making new art has been getting pushed onto the back burner a fair amount.