This is probably the best sprite you got in your gallery, very nice job! The head could have some work though, and the upper part of the body. Also, the left arm (for Tyranitar the right) is too light, and the outline is too dark.
Of course, these are just minor things and you don't have to chance them at all. Great job, once again
Oh yeah, I just noticed the arm, thanks for pointing that out. As for the head and upper body - I had absolutely no idea how to shade that so I just winged it xD
The head could have some work though, and the upper part of the body.
Also, the left arm (for Tyranitar the right) is too light, and the outline is too dark.
Of course, these are just minor things and you don't have to chance them at all.
Great job, once again