thanks all, here is a tip to do the brick job
ok guy, here is the pics for an illustrated how to !
If some point are not clear enough ask me, i'll try to give you an answers
So first you have to engrave your wall in polystyrene foam (you can use blue insulating foam at Home Depot in US for example). Here i use some Depron (that's use to made light RC plane)
To engrave the material, let's have a look to this photos wich show you how to do the better job for that :



Here i made my wall like this and here is the result

I haven't got pics for the primer of my work with the Gesso, but you just have to paint the wall with it,

and when it's dry, you paint with the first color !

and you have this when the paint is dry

Then you take the 3 other color


And paint randomly some brick
Edited by philbass, 16 May 2010 - 07:17 PM.