I need some ideas for cosplay!!

That depends on your look. If anda don't wear a peruke and a bought costume then anda 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 baju 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, atau if anda have a lighter hair color, anda can dye it to the color of any Anime character with colored hair (Examples: Fairytail; Natsu, Jellal, atau Juvia. Ouran High School Host Club; One of the twin's hair when they had their fake fight) anda could get a wig too, if anda want. For the body , it doesn't really matter if anda are skinny atau if anda 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, anda can wear face paint, atau wear clothes the color of the skin of the character. I hope this helps!