playing around on Photoshop

Having a little play around on photoshop - im still pretty new to it so its just a matter of trial and error. In my previous post i talked about merging the images together. But the two images from google were rather different in colouring and size to i thought i had to Photoshop one of the images to make it blend better later on. So i went from this...:

To this ...: (

I have successfully ruined a lovely photo by trying to make it blend to the next image. I WILL be SCRAPPING this idea...