I figured his legs looked a bit short but I wasn't sure if it was noticeable or not. I started doing a base sculpt in Zbrush but its nothing other than an torso, I'm mainly relying on the sketch for design and not for anatomy but I'll correct the sketch.
@enalya I had a pose in mind which @shier_sea completely read my mind on. I'll definitely work on the design and pose more before going full into the modeling phase.
Thank you for the feedback so far, I'll post updates soon.