Thank you for the tutorials but I am unable to do a good grain, probably because of the eraser.
I show to you my results , perhaps someone can do better?!
"Gessoed Canvas" is the texture that I find it with another soft and want to us it in ArtrageAny help or any advise are welcome.
g_layer 0 is the selection of 300x300 on that texture
g_layer 1 is the 4 merged layers (the one with the lines inside)
g_layer 2 is my final layer , the canvas grain
f20 is the canvas that I made with g_layer_2,
as you can see is not a very uniform canvas; it can be good for something but is no good in general .