People about cosplay...
Coming from a movie production background, you put on the parts of your costume that would interfere with makeup – possibly rubbing on your face when donning the apparel – before you put on makeup. None of the rest of your costume should be worn until it is just before “showtime”.
And costumers (both hobbyists and professionals) should be planning for makeup application and making a costume that can be put on without having to go over the head like a T-shirt does. Aside from the fact that this is easy to make, there really isn’t a good excuse for designing a costume that ruins makeup, or alternately, has to be worn while makeup is being applied.
No, it is perfectly normal to buy a cosplay costume. Even professional cosplayers buy or get the costume made from someone else. However, making your own costume has a different thrill to it.
What is important though, is how you carry the costume and how much fun you’re having while cosplaying.
As for “devaluing someone’s participation” goes, some may feel that your cosplay is superior to them, when they took more efforts. However, it is not supposed to be that way as these things are done for fun.
I enjoy comics too, mainly Judge Dredd, actually nothing else to think about it. I’ve got T-shirts, computer games, loads of comics / books, an Oyster card wallet, badge and cufflinks of JD. You could say I’m a fan. At comic conventions I take interest in seeing the various folks in costume. It’s not my thing, but I get their enthusiasm.
One of the team on my current client in Holland is a huge Star Trek fan. He has all the films and all the episodes. At the moment he’s collecting a part work of all the space vehicles. He goes to events but hates seeing anyone who dresses up and is out of character. “No one from Star Fleet smokes, carries a beer or spends their time on an iPhone”. He doesn’t do cosplay but appreciates those who take the time to add something to the atmosphere of an event by doing it well.
Watching my shy 8 year old and his 10 year brother with the Star Wars guys at a convention made my day. These people enjoy spreading joy. To me, that act of generosity is a big appeal.