Erika, this is a very nice collage. There are a lot of elements, but I think you've done great work with arranging and sizing them. I honestly don't have many recommendations for the pieces in here. I also like the sense of perspective in the image. If you make sure you have it saved, I might recommend experimenting with shading or drop shadows to play up this feel. There is a drop shadow filter/effect that might be interesting. You might be able to airbrush in some grays, etc. as well. I think the image is fine, so just enhancing the effects you've set up will make it evern stronger. Nice work.