I didnt make this costume, but I bought it in Cospatio shop when I was in Japan for work. I like Chidori, so when I saw this dress in sale I though: "great it has a good price, I could to buy it, really a nice souvenir from Japan". So I took it. In general I like to sew the dresses, but when I see a good dress in sale, I must buy it.
This happen also with normal dress in RL life and not only in the cosplay field.