Halloween stressing 😖

Soooo it’s almost Halloween. Yay! My favorite holiday! EXCEPT. I’m being Tim Drake/Robin for Halloween and I can’t find his Robin costume for sale ANYWHERE!! So I’ve come to the conclusion that I should just get some black leggings or take them from my mom and paint the green knee things on and I can sew the shirt but it’s almost October and I don’t have a pattern, or fabric, or even a plan and it’s kinda stressing me out bc either I start sewing now or it never happens and I’m gonna be matching with my friend this year bc she’s gonna be Batman and she’s making a whole Batmobile and everything and if she goes through all that and I don’t even have my costume yet then I’ll feel really bad but I genuinely have no idea where to buy a costume that’ll ship in time, or get a pattern, or how to work with stretchy/tight materials for sewing! HELPP!!!