No it just it doesn't look right. This is blockland. And if I made it square it would look worse.
All you need is a small white orb on the inside of the red bulb, and maybe have someone script you some kind of light attached to the bulb. It looks fine, IMO. Once I tried to make one, and I wasn't satisfied, but this is better than mine and I can see this working. :3
Oh, and how about a nose, too, so it looks more realistic? :O