I thought of some things I forgot to mention last year.
Be inventive! (Like this kid's Mom was.) Sushi costume with wasabi and ginger headband!!!! Brilliant....
Reconsider if your costume just simply makes you look horrible. I was astonished once to see a (single!) friend show up at a party wearing what looked like a tarp with some leaves and twigs glued to it. She said she was a pile of raked leaves. When we introduced her to someone hot, I suspect she wished she could be siphoned up by one of those giant leaf collection trucks. Awkward...
If you are making a costume for a child, make sure it is something that almost everyone recognizes so they don't have to explain it to everyone.
Again, if you are making something for a child, and if there is a head portion of the costume, try and make it detachable especially if they are going to wear it to a party, or to school.
When I was five, my mom made me a costume that broke both those two rules. I was a 'Nauga'! A Nauga was the fictitious creature from which Naugahyde brand vinyl was taken--------according to their ad campaign. Nobody knew what a Nauga was back then either, and it was hard for a five year old to explain.
The worst thing was I wore it to kindergarten.
In addition to the fact that there was no way to take off the 'head', she had not made an actual opening for the mouth. She simply appliqued that toothy grimace in felt right onto the face. When it was time for lunch and the Halloween party, I discovered that I could not eat with my costume on! Being very motivated by the treats, I discovered that if I withdrew one arm from its sleeve inside my costume, and brought my hand up to an eye-hole, I could slip jelly beans and the like through the small opening and eat them that way.
Another problem was that I needed help to take it off to go to the bathroom....
Which reminds me, if your young child insists on being a mummy, make sure they go to the bathroom before you wrap them up!
And ladies, remember, it's Halloween, not slutfest! If you want to wear one of these tacky outfits, just keep it in your bedroom and role-play to your heart's content.
If you do buy one anyway, be careful about what is included------in the Warrior Princess one, the shoes are the best part, and yet are not part of the get-up. And the sex kitten costume does not include that bod.