It's hard to judge, without knowing who this guy is supposed to be. I don't mind the style. I kind of like the lumpy quality he has to him, but I generally prefer slightly smaller heads. (And his face doesn't seem nearly as fat as his body - cheekbones usually show on skinny people.)
That said - picky things: His stance in the full-on view is weird and unbalanced. His feet are also way tiny - unless you want them that way, they should be more in proportion. One arm also appears to be longer than the other. His shirt looks way tight across the torso - tight enough to see the collar bone (which probably wouldn't be visible on such a hefty guy), but the shirt is loose around the arms. The shadow on the jeans on the side view is odd - the leg far away would usually be more shaded. I don't like his lips; they look too thin, and too dark.
That said - picky things: His stance in the full-on view is weird and unbalanced. His feet are also way tiny - unless you want them that way, they should be more in proportion. One arm also appears to be longer than the other. His shirt looks way tight across the torso - tight enough to see the collar bone (which probably wouldn't be visible on such a hefty guy), but the shirt is loose around the arms. The shadow on the jeans on the side view is odd - the leg far away would usually be more shaded. I don't like his lips; they look too thin, and too dark.