For a first, it's alright, but as is the norm of Pixelation, we'd advise you to start practicing anatomy a bit. While it seems JUST about alright, it could be a lot better, including the facial structures, the body shape to convey he's not just a random blob with V like arms. For starters, you could plan out a simple skeleton/stickman of the character and THEN, after you think you got the positioning of his skeletal limbs right, start filling and fleshing the character out, minding everything that you want to do is right, including but not limited to muscles, facial structures as stated above, perspective, positioning, lighting and so forth.