I like the idea. Were you thinking of other colors, too, or just the white shirt? I think it could work well on a variety (maybe a pink or blue).
I feel like her face could use some more definition, or maybe there should be something else in that spot. There's just the space where her mouth/nose would be and nothing fills it. I'm definitely a fan overall though. Keep working!
i like the concept & color scheme but i agree with aquasiastic that it needs a little bit of more definition atleast the face would look better if it is more defined. can you put it on a darker background as other things in the background are almost invisble so its hard to figure out whats happening