Wow. Talk about dedication. If I could sew and cosplay ANY character from ANY game it would have to be Cid Highwind of Final Fantasy VII. It is both complex but relatively simple. But again, lovely work.
It's a good idea to start by joining a site with a cosplay message board (like cosplay.com) where you can ask other cosplayers questions for help. You can also research on the internet and look up cosplay tutorials if you aren't sure how to make something. It's probably easiest to learn how to sew from someone that you know or from taking a sewing class in person. Some cosplayers buy their costumes online or have them commissioned by other cosplayers, which is fine too as long as you don't plan to enter it into a craftsmanship contest. Good luck!