Great cover on that Red Sonja #11 ... but I see from comics.org that the interior artwork isn't by the same artist?
No, it's not. Dynamite does multiple covers on its books by a variety of artists. That particular one is by Amanda Conner (as if you couldn't tell).
The art inside is a by a Serbian artist named Mirko Colak (there are various accents on that but I don't know to type them). I was not familiar with him before his run on Red Sonja, but I find his art to be better than decent and well-suited to sword and sorcery.