If this is just your third attempt at flash, then I see reason why people should complain.
You keep workin' on your flash drawings and before you know it, you'll be an expert.
Simple basic stuff
Definitely needs a mute button. But with the lack of many clothing options, who's really playing this for more than 5minutes, if that.
Well at least there's some good music
Curiosity compels me to ask you why you didn't put more clothes, etc...
I suppose it isn't the worst Flash I've seen,
And it's one of the first few attempts at a flash you've made, so the best I can say is take any reviews you get, and listen to whatever criticism they offer.
I'm not the biggest fan of dress up games to begin with, but there's so much more you could do with it! You could have added many more articles of clothing, accessories, etc. Having only one other outfit to swap just doesn't feel like there's much to do in the first place.
Secondly, I recommend giving the player some sort of option to easily mute the audio, if you're going to include music. No matter what song you use, there will be somebody that won't like it, and giving either multiple songs as an option, and/or the ability to easily mute it, certainly helps.
I wouldn't feel discouraged by low reviews, so much as see them as an opportunity to improve your future works! I think that if you took the advice I've given you, it would be a significantly better start.