you saturated too much the sky... and if you want to make it more impressive, try to use more plans (i dont know the right word) as you go to the backround. here is an exsample i found in today's dd [link] you can see the first plan (the woman running), the second (the boy with the bag), the third (the one who runs far behind), and last the building. it gives depth to the picture. in your case it looks like you jumped from 1st to 4th leaving out the other three. i am sorry for my bad english! keep up the good work. i hope i helped!