Couple of things to think about if you are planning on rendering this out in 3D. Are you making a 3D sculpt or do you want this to be able to move/be animated. If the latter you really want to simplify your design. As everyone has noted you should redraw this get some references because even if you are sculpting this some 3D artists find it easier to sculpt in a resting pose (for humans the T pose) and then move the arms and legs with rigging into the new pose (so as to really get a realistic look. If you are planning on sculpting this in a program like mudbox you still want some better references and a great computer. That amount of detail requires millions of polys- it is doable and looks good but will chew up a lot of memory and may crash your computer. Student Versions of Maya and Mudbox can be found for free on their website. With a proper email address i believe is how they look it up you can get a 3 year student license
In general I think you should simplify all your designs in order to not want to kill yourself later
Hope this Helps!
A Cartoonist is just a lazy Animator.