i do like 7, its awfully cute! but i think that 10 would suit your character more, a bit more masculine, a bit more bulky and such. :)....though, thinking about superhero masks from superheros in comics etc, the masks are usually similar to thumbnails1,3,5,7,9.looking at 1, i like the way the turned up nose area makes the lines look almost abstract - i think it would be cool to see an abstract tiger design on 1
Sorry, but I cannot get over the impression that number's 4 upper part is a retarded lama... :II like numbers 9 and 11 the most. They are simple yet interesting and look like actual masks, not hats.
for me, it's between 10 and 11 (I like the shaping of 11 the best).