There is absolutely nothing wrong with your vaginal lips. In fact they are quite beautiful. I know from personal experience many men consider it a HUGE turn on. So be proud you have large lips.
Look up Betty Dodson's website. She is an artist who did some art of women's labia, and it kind of transformed into a gallery of drawings that women look at when they want some kind of reassurance they are normal. There are labia on her gallery that look like butterflies, some you could tie in knots, some with black edges, etc. etc. etc. As my husband says, to a man, any labia is good labia, if you are in the lucky position of looking at them face to face. Labia are not enlarged by having sex nor by masturbation. Don't worry, all good. There are a few men out there who don't like big labia, but tons of men who get all warm and gushy just thinking the term "big labia."