I cosplay but I will post my own cons and pros to it, so on. For me cosplaying is doing your best to one make a pretty freaking badass costume, and two being as much of the physical embodiment of the character. Though true when it comes to anime it's pretty much impossible to have HUUUUGE eyes and big foreheads, and natural blue hair, BUUUUT you can come close. For me in a few weeks I am going to a local convention where I live where I have been invited to go. I'm cosplaying Felicia Hardy- Black Cat though I am not comic book in general appearance I believe I can pull her off well, that's besides the 5'11" full figured look, it's also the hours of blood sweat and tears I put in at the gym to really be able to squeeze into a black vinyl cat suit.
Pros to cosplay:
Understanding of the character and the correct potrayal. Meaning you're short you cosplay a short character, you're tall you cosplay a tall character etc. etc.
Willing to put in time and work physically (gym!) as well as either finding a costume designer or making your own.
Realizing you are NOT the absolute best, and that you are NOT the only one cosplaying the character.
Being humble and appreciating everyone who tries their best as well.
Showering, good hygine, washing your damn costume so it doesn't stink like nasty 4-day old B.O.!!!!!
Knowing what body type you have, and finding a character similiar, or if the character doesn't have the same as yours, adapting and becoming similiar to the character's physique.
Cons:
People who are so cocky, think they are absolutely the best, and make everyone else who cosplays feel bad. This I'm talking about those who are great at their craft with making a costume, but to those that say aren't, they make sure to point out what they have done wrong and how they'd never do that to their own. Be humble!
Fat fangirls who cosplay male characters and do that Yaoi shit! Breaking news! If those characters were real, and they were all about being gay, guess what?! They aren't inviting you to the threesome.
Mass gathering of creepy fanboys that refuse to look above the neckline. Actually... as a female cosplayer fanboys generally creep me out. Especially the ones that have bad teeth, stink, and STALK ME DURING THE DAYS OF THE CON! I've called security had you escorted out once before, do it again, I call the authorities. Please, please, PLEASE!!!! All fangirls and fanboys if you like the character don't creep out the professional cosplayers out.
Old people cosplaying! Rather creepy to see some old guy cosplay and then be around a bunch of tweens, especially when it has a strong female fanbase and there tends to be young girls that flock to the 'characters' attention.
Not being in the best physical shape for the costume.
Bad costume or not, not being there! Make it memorable who you were, it's great that way.
Yeah that's all I have really as for cosplaying for my point.