Sky Replacement - Help Needed

[Brother Theo]

I followed the sky replacement tutorial: https://vimeo.com/131644949

But my results suck!  Please take a look at the attached and tell me what I did wrong. Thx.

 

[firstdefence]

It looks like you didn't make a tight enough selection so some of the white sky that was there has remained along the tree line edge creating that unnatural look.

Secondly you have used a sky that doesn't fit the image, a softer sky would look more realistic and would probably work better with the tree line edge.

To make a better selection zoom in so you can make a selection against the tree line more effectively.

In the image below I made the selection with the selection brush and refined the edge by using a bit of feathering (1.5 - 2px) I duplicated the background layer so I had a copy to go back to and deleted the selection from the duplicate background layer. I turned off the original background layer, I dropped a new sky in behind the image and adjusted it's size and position and I also adjusted its saturation and luminosity using the HSL adjustment filter so that it suited the image more, its obviously a dull day so the sky has to represent that with muted colours.

 

[Brother Theo]

Thank you!