Nice attempt..

all I can see is an extra shadow, maybe some explanation will help...

ive never seen so little source used since i started on this site lol. all you did was use the beek??? boring!!!!

Yeah...a SBS would definitely help....but even with a SBS I tend to believe there's not enough source image used! I understand why you used this image, it is a very nice image, but one of the most important things in photoshop is choosing the right sources for your purposes. I have a huge photo library and I love a lot of images in it and I can't wait to use them all, but I just need to use them at the right time and place! And I think that's what you should try to do: resist the urge to use an image that you really love for a composition that would not make any sense!

And somthing else: are you sure you can use the Nasa image? Oh well...hope I helped just a bit....and I wish you "The best of luck!"

I agree with Nellista.

Depending on where this image was taken from...if it was from Nasa website then it's public domain. So no worries, if it was lifted from a blog page or something then it may not be useable.

wheres the source?

???