I seen something similar to this a long time ago, don't remember where i seen it now, but remember thinking it was really cute and was the first thing i thought of when i seen this image .

Hope you guys enjoy it!

Stairs are built using the stairs from the source image and blended together

trees are a tree brush.

castle is pieces of castle from source attached and original image

ground is also made from original image.

then several color layers laid over and blending changed to add color etc

edit : changed image of boy to my 2 little girls , the pic of the girls if from my own camera :)

also brightened it up a bit.

ps. not 100% sure what combo of brushes i used, as i have a few sets "mergerd" in photoshop that i labled clouds, but the set is made up of the 3 sets i posted as sources :)

adding something

Pxleyes??? LoL!!!