Replace a Sky

This assignment required me to take a picture of a landscape and a picture of the sky. I then had to paste the sky into the landscape picture. I had problems with this assignment because I took my pictures at different times of the day and the landscape picture was all grey and the sky was bright. I took more pictures a different day when the sun was out and the horizon of the landscape was still very grey because of how far away it was, so I just erased the gray trees against the sky and made it look a little better.