Congrats on your first challenge! I know these first two are a bit of a rough start, but we can talk about it when I see you this week. :)
On this one I will say that a) folks here hate "noise/grain" and b) folks here generally hate things that are not pretty.
Personally I like the humour in the shot, but would have worked on getting rid of some of the noise in it, and made it a bit more contrasty. I will show you how to do all that this week. :)
Interesting choice of subject but the noise and combined with it being slightly out of focus makes this just really unappealing, haha if the focus was crisper I think it would be more funny and have more wow factor