More of amateur hour

As usual, I've put together my attempt at cool invitations for the church youth group I'm in charge of. This time I used this poster for inspiration:

Lately I've really been liking the gray/yellow combination, so here is my re-interpertation (knock-off) of it:

At first I really hated the little specs around everything that I can't figure out how to get rid of (because I don't have great editing software), but then I think it kind of turned out gritty...which is cool too.

So what do you think? Should I add/take anything away?