Looks awesome, dude! For some reason, one of the things that jumps out at me the most is his facial hair. I've always been of the opinion that Jax needs facial hair to work visually, and for some reason he lost it all between Deadly Alliance and MK9. Glad he got it back, and really glad you included it here.
...yeah, I focus on weird things in character design. @_@
Lovin. Lookin forward to more. I'd say don't be afraid to improvise on others too as you did here with the hands and such. Your design sense is good, and it'll make the chars more interesting to see. : D