Sta.sh
Checking your sensor.
What lens to use? Usually something like a teleph
in the top left corner. 
Step 1
For this tutorial, I've chosen an archive photo from Paris, taken on top of the Arc de Triomphe, and showing La Défense in the background:
And after some basic edition on Lightroom 3.4 I get this:
I'll explain now how ot get the tilt-shift edition step by step:
1st - We open the picture on Photoshop, and we turn on the "fast mask" by clicking here:
2nd - With pencils at 2500 and strenght at 0%, we paint the area that we want to look unfocused to make the tilt-shift.
3rd - We turn off the fast mask mode, and deselect and invert the selection:
4th - We click on lens blur:
5th - We set the right settings for the lens blur (the higher ratio, the more unfocused).
6th - We can play a bit with the curves to make the picture have some unreal effect.
And this is the final look:
Some other examples using this effect:
Hope you like it, if you try it, I'd like to see the results
i suppose you do know that "tilt-shift" is used in the professional world mostly to do the exact contrary
of what you do here; i.e. they use such lenses/backs to increase DOF in ways that would not be possible
with fixed plane lenses.
it's also used sometimes in analog photo enlargers in darkrooms.
i haven't looked at your Gallery yet, but will do it very soon.
Thank you.
i like it
[link]
thx ..^^