At a first glance the leopard is the first thing you see, and she stands out sorely against the background. There is a definite difference between the amount of time and detail you put into the character versus the focus of the page, making it seem like you just threw together the scenery in a few rash minutes.
If the trees are supposed to be the main focus of the page (assuming such based on the dialogue), wouldn't it have made sense to put more detail into them? Or if the trees are the animals concern, have him/her looking at them rather than strait at the reader?

(Not trying to sound mean here, I'm just trying to offer some advice)

this is some good critique which I will put into practise at a later date - the assignment was about the character however! She is supposed to stand out so that the children can focus on her.. then move into looking at the vague background.

honestly i think it is all really well done. kitten guy may have a point but i think the solution could be easier than you think. the contrast lies with the lines! maybe just leave some thin black lines around the background to add a little constrast there :D
really well done
i'm in love with your leopard character

Ooh next time I get some time spare I might revisit and see what thin black lines would do - thankies beth <3
I do love drawing leopards~