eh- im going to be blunt with you.
beliar looks like he imcomplete- no shading or anything- just a contour outline drawing. to me, he looks TOO exagerated to be veiwed as a 'sane' drawing ( im really into art so bare with me how i say things)
you put, i think, too many horns, and the grining face doesnt seem to fit the character your trying to draw.
i think maybe you should turn the corners of his mouth down t give him more of a scouring face and maybe do simple shading, like around the bases of the horns and spikes, and maybe put some shade on his chest to bring it out some, to make him look a little more buff.
it just seem too imcomplete to me.
when i first started drawing my basic look was like beliar..
its good, but it just reminds me of some of the stuff i drew when i first started that I (me, not your drawing) thought was crap that everyone else liked, but didnt please me.
i found that just adding small shaded lines around curves and stuff like that make the drawing a bit more, well..
dont know how to say it but to me it satifys me more..
anyway, thats just when it comes to drawing profiles of various creatures