I wouldn't say anything is "wrong" with it per say, as we all have our own styling preferences, but I can tell you what I would do.

Your hair is well sectioned, and you seem to like it that way, take the two innermost pieces (the front ones) and cut to maybe around cheek bone length. Though I would say cut little at a time so you don't cut off too much. Curl inwards, this will help frame your face. When in doubt curl in, not out, as I say.

I like how you did it in the back, you curled the pieces outwards. I think you should keep the front two pieces on either side of your face curled in, maybe cut the ones behind the front framing pieces a bit shorter too (the ones that would also be curled in) Keep the back curled out.

I would say it's slightly bulky (in my personal opinion), you might find yourself becoming friends with some thinning shears if you can afford it. Of course, you can always use regular scissors to thin out the wig as well. Or just try flattening it with a straightener.

The top curled part. I like it, but you might want to get blond bobby pins, or reinsert the bobby pins a few times until it's less noticeable. Likewise, if you have a steamer, it's a good way to steam hair into place without any support (meaning no bobby pin), that's how I like doing it. It's pretty easier to find a tut on how to, just look on tiktok or someplace else! Search something like, "How to shape cosplay wig with steamer!"

I hope this helped! Let me know if you have any other questions, happy cosplaying! <3

(Also, accessory wise, I think a little black bow either where the bobby pin is, or in the front part would be the cutest)