I would also check some of the Lolita tutorials for the dress because it has a similar style. This looks very similar to the Lolita dress I made my sister last year. I'll dig around and see if I can find some of the tutorials that I used for it!
Planned CosplaysSuper Sailor Moon 50%
Skyloft Zelda 25%
Sakizou's Soy Maccha 15%