I need some ideas for cosplay!!

That depends on your look. If bạn don't wear a peruke and a bought costume then bạn should dress like somebody with the same hair color as you. I recommend Nico Robin from film Z for black hair. Nami in her dress áo sơ mi water 7 outfit for red hair and any outfit from Lucy Heartfilia for blonde hair. Those are easy to make even without having to buy a cosplay.

Anyone with your hair color, hoặc if bạn have a lighter hair color, bạn can dye it to the color of any anime character with colored hair (Examples: Fairytail; Natsu, Jellal, hoặc Juvia. Ouran High School Host Club; One of the twin's hair when they had their fake fight) bạn could get a wig too, if bạn want. For the body , it doesn't really matter if bạn are skinny hoặc if bạn have big muscles. That's just how anime characters are made. Boys are muscular, girls are skinny, but that doesn't matter. For skin tone, bạn can wear face paint, hoặc wear clothes the color of the skin of the character. I hope this helps!