female vocals vocalist vn video game galgame could add these as some extra info for song. Wouldn't hurt
Also I'd remove handstream from tags, this chart is barely handstream - it's mostly long note patterns.
electronic japanese drum n bass dnb eroge game visual novel female vocals vocalist vn video game galgame ln long note inverse pulltop Miagete Goran Yozora no Hoshi o A Sky Full of Stars
add "electronic pulltop" to tags, pulltop is the developer for the visual novel.
background is a little big in file size (1.37mb), we can reduce this.
here is a reduced size version, same dimensions but now at 458kb -> https://i.imgur.com/of6mfY0.jpeg
i will say preview point is a bit weird imo, you dont have to change it if you really dont want to, but I think using 05:14:591 - as the preview would be better.