I found it very hard, trying to think of what Voldemort's soal look like, becuse the soal it's self can't be seen.
So I came up with this drawing (which i think is really rubbish, really basic for me)
The idea behind it is that everyone has a clear person inside them, which is the soal. Voldemort however has commited so many murders, that his soal has been stained black and left it's mark on his physical appearence. The red eyes (which aren't that clear) symbolise the murders his committed and the blood spilt.
please comment, what are your opinions on what voldemort's soal would look like.