I have a medium size canvass and I have painted it with gesso and have put 2 photos on upside down now I have to leave to dry have not taken photo as yet but will soon so you can see the before and after of what happens when I gently rub the paper of the canvas .
still having some problems uploading never mind
so I will update this post when I do the next part of the project have a blessed evening
Linda's garden and wildlife 
Good luck with both the project and uploading photos, Linda.
Happy painting! xx