I've made some changes, can you let me know your thoughts? I've added more detail the ballerina mostly, but also to the other objects. Thanks in advance!

Hi everyone,
I'm really sorry if this is the wrong place to post this but I'm totally new here! I am an illustration contributor at iStockphoto, and I've uploaded a few illustrations over the years, but trying to get back into it. It seems as if iStock has changed a LOT since I became a contributor, and I can't seem to access the 'Contributor Community'.

I submitted this image of a chef with various cooking accessories and it was accepted: http://www.istockphoto.com/vector/chef-with-accessories-74986003

But then I uploaded a similar illustration of a ballerina as with accessories, as I was going to do a series on various professions:



So despite the fact that the illustrations are fairly similar (similar idea anyway) I was surprised when the ballerina was rejected for this reason: 'We're sorry but we found the overall composition of this file lacking in visual impact and therefore not suitable as stock. With the rapid growth of the iStock collection, we give valuable consideration to each file but unfortunately cannot accept all submissions. Please don't take it personally. This isn't necessarily a reflection of your skill, rather a decision by iStock to determine commercial applications for you illustration as royalty-free stock.'

The problem with this response is that it's so vague. It could be something about the illustration which doesn't work. It could be that they've got too many ballerina images. It could be a huge number of things, but I don't know how to correct it. So should I carry on with the professions series or not? I'm a little confused - any help or critique would be most appreciated. Many thanks.