Not bad. I mean, there's not a lot I can say. It's a dress-up game, which is the most basic of flash "games." Usually you have to base your score off artistic value on dress-ups, along with variety of outfits and how well they "mesh" to the character. This isn't BAD, exactly. It's just very...unappealing to the eye, and, I have to say, the ear. J-pop is probably my most least-favorite of all music types because of a myriad of reasons [don't worry, all pop music rates really low with me]. Looking over that fact, the art is alright. There's good variety, but nothing innovative or new. And honestly, it's anime; there's like only three variations to anime, and only one of them is ever any good, and yet is almost never used, so, again, this isn't anything new.
Still, this is your first dressup game, so rather than just going "THIS IS INEXCUSABLY HORRID" I'll say "For a first time, it's not bad." Hence, you get a 4.
Also, this shouldn't be rated 17+. There is no nudity of any kind, except maybe bra-and-underwear, which is barely enough to rate a 13+. Might wanna change that.