OK- lots of colour range
We get a lot of dressups here and it gets very boring. There is nothing wrong with this one, indeed it all fits very well and the range of colour for almost everything in the wide range of clothes is impressive.You have a reasonable range of other accesories, such as ears, tail etc. Which is good.
Don't worry about the preloader too much- as it is a small file and loads quickly it doesn't matter, but find out how to insert one before you submit again, it will count against you.
I don't know if there is any sound as I have no sound, but if not, there should be some kind of music. Since dressups have so little variety in their interaction, putting in a choice of music with a music off button would certainly help.
The actual picture is quite small and is rather overwhelmed by the clothes etc around it. The clothes are also very close together and it is difficult to see them very well, especially as the row of colours blurs them together.
The better dressups have animation, such as blinking eyes.
One could give the person a voice and make it say things from time to time.
To clear space you could have buttons that bring up a range one at a time eg:
Tops, hair, skirts, tails etc
that would leave you room to see each one and make everything bigger.
Take a look at this NG submission for inspiration:
http://www.newgrounds.com/portal/view /319272
Best Wishes,
Iced of the Dragons & Spirits