To create this canvas effect, I used the filter gallery (don’t be afraid, it won’t kill you and you won’t be considered an amateur just because you open filter>filter gallery> grain, it’s all about how you use it, not what ;P )
Step 1: copy the picture in a new layer
Step 2: filter>filter gallery> grain and in the grain type choose vertical (very high intensity, low contrast)
Step 3: at this point you have to change the blend: I used screen.
Step 4: new copy of the layer.
Step 5: repeat step 2 but choose grain type: horisontal
Step 6: Blend again, in my case it worked with overlay and layer opacity around 28.
Now depending on your picture you probably need different blending and different intensities. I can give you the key, but which door the key does open, that’s something you have to check on your own by going testing on all the doors in front of you. 🙂
Stay creative and I’ll catch-ya on the B-side!