I'd say go for it, regardless of what you look like. If you want to crossplay, or cosplay as a male character(or female, if you're a dude) then go for it!
I must say, I'm a female, but I only and I mean only cosplay as males, simply because I think all female characters are boring. XD I've only found one I may want to cosplay because she's loud, obnoxious and awesome. XD
I don't know what animes you watch or like, but the ones I watch and like, not really any of the male characters are boring and I have at least...*thinks and counts to self* Ronald Knox(Kid in my avatar), Claude Faustus(maybe), Ciel Phantomhive(hopefully)America(low on list) four? males I'd like to cosplay. One for sure(Ronald) and different outfits for a couple of those characters.
So not all male characters are boring. In my opinion, none of the guys listed above are.
but regardless of gender, cosplay who you'd like. X)
But one piece of advice...
If crossplaying FtM, I'd highly recommend a chest binder, specifically the Tri-Top from Underworks. :3
There are other ones than that, and that can be covered in a different topic. That's just my favourite, cheap(about $30 +/-) and safe binding method.
Okay, that's all! Hope I could help at least a little bit.