STEP 1Find a nice photo
this is from
http://www.flickr.com/photos/zakwitnij/ page link
http://www.flickr.com/photos/zakwitnij/271249212/
STEP 2I like make the subject a bit more impressive, more tall ...here just scale up but only the height will work
STEP 3
then open gmic
look under the preview "output option" and change to "new layer" now in the GMIC filter list menu search Artistic/bw- pencil
You have a button to maximize the preview when you get something good as
DO NOT CLICK OK...BUT "APPLY"STEP 4(Click ok will close GMIC , we want still use it )
Now if you did right (changing the gmic output option to "new layer" the focus of GMIC is still on the original
Now we want add some depth and texture to our work, so chose Artistic/BW-Sketch
Now the filter has many options, and may be very slow also to update the preview
But here we just need to capture the main structure so also a rought sketch as this could work
(NOTE this filter may do much more neat and detailed sketch ... i did quickly because i needed only as effect layer
STEP 5OK NOW you may close GMIC and change the mode of this layer in multiply
... WE ALMOST GOT IT !
STEP 6NOW Layer new from visible, increase contrast
THIS IS ALL FOR BW...
BUR if you LIKE YOU ADD THE COLORS BACK:STEP 7Move the
scaled up original on top of the "new from visible layer", and since a want it moody and dark , here i change layer mode to multiply
(that will also darken ...you may experiment other mode for other effects)
NOTE here i didn't do any post work
But adding layer mask to the layers, you may as example lighten the black textures on the ground in front of the house, just painting the layermask (of the sketch layer with grey or black on part to lighten )