I've never gotten the hang of pastels in real life so I find doing it with Photoshop very satisfying!
I mucked around a bit with this but the main thrust of what I did is as follows:
Duped picture. (duh)
Applied artistic filter - rough pastels.
Did it again to the background (distant hills) only to pump up their texture since they looked flat compared to the houses.
Rotated the canvas 90 degrees and ran rough pastels again. (This insured that I didn't get lines in only one direction. This is a pet peeve of mine since it always looks too "photoshoppy" to me when it happens.)
I still wasn't happy with this (still wasn't arty enough...too much like the real photo in tone) so I went a bit further.
Ran an artistic - cutout filter on it to break the picture up into as many colour blocks as I could (top slider set to 8).
Then I did the rough pastels, rotate 90 degrees, rough pastels again. This was definitely arty enough but now I had lost too much detail so I reduced the opacity of the layer to let the original photo peek through a bit.
As a final touch I used the sponge tool (set to saturate) to pump up the colours of the vegetation/flowers and the brown roofs. (In my experience pastel people often use bright colours because the medium lends itself so well to this)
So what do you think? I wish I had a printer that could do this justice!
By the way...I always learn so much from this site and all your submissions! I've copied lots of your techniques and wasted many enjoyable hours staying up until 3 am playing with photos. thanks everyone