My daughter is turning 1 on Feb. 22nd Tuesday.I dont know how to make the characters....is there some way to sculpt them out of icing.Plz any help will be greatly appericated.Also u cant buy toys or cake themes of Jungle Junction.

Do you know how to do color flow? If you arent worried about them being 3D you can use the color flow method. All you need is a picture of the characters.
http://www.wilton.com/recipe/Color-Flow-1

I agree with the previous reply, using color flow could be nice. I prefer to make characters like that our of fondant/gumpaste though. The Jungle Junction characters are adorable, my daughters love them too. Maybe I'll play with some of my leftover fondant/gumpaste today and maybe make a tutorial for you if that would help.