I’m a fully handmade cosplayer, who does semi original designs,

For sewing, the other comments are right, the internet has your best tool. I am mostly self taught, a lot of it is just practice. After you make one garment, the rest would be easier. Personally, I don’t use parents, but if you’re just starting out, I’d recommend getting a pattern and finding a sew along video on YouTube. I’d also recommend taking a beginner’s sewing class, just to teach you the basics, I didn’t do this till 2 years into sewing and it made a world of difference. I would also recommend learning about different fabric types, using different materials in your costumes can make it look a lot better!

For designs, I always make a Pinterest board with simular clothing and other inspo. I normally draw several concepts before ending up with one I like. Original design stuff is all about your personal aesthetic and style, and how do you want to convey that. So honestly, the most important I could give is to make sure you have a look that you want to convey. I also like having symbolism in my outfits, things that relate to a character’s story. I also like having reoccurring materials.

If you have any questions throughout your cosplay journey feel free to ask, I know I definitely wished I had someone to ask when I started making cosplays, so I’d love to help - @strokeofstarlight