I placed the angel on a new layer above a copy of the source image and using mask I got rid of its background and pedestal.
step 2 of 10
I added photo filtre adjustment layer to the angel as to match colours.
step 3 of 10
I created a new layer between the angel and the source image layer and filled it with blue.
step 4 of 10
Exposure adjustment layer was created and clipped to the source image.
step 5 of 10
On a new layer at the top I created the light beams with polygonal lasso tool, applied overlay blending and 25% opacity. Duplicated this layer and applied screen blending and 30% opacity.
step 6 of 10
step 7 of 10
step 8 of 10
Working on the exposure mask above the source image, and using a soft brush with low opacity, I erasured the exposure where light touched the ground. I also got rid of the shadow of the tree to the right.
step 9 of 10
On a new layer below the angel layer I created the angel shadow.
step 10 of 10
Finally on a layer above the angel I created some shadows on its sides.