Okay, I think I forgot a step... Ill explain in better detail only by memory! If this doesn't work, ill get home and help you out then :). Okay, so for changing the canvas size so it does not cut off the photo, ill give an e xample. Say my photo is 1034 x 2058. I want to stroke at 50 pixels. I would add 50 pixels to both 1034 and 2058. Make sure that it says pixels on the end, not inches or anything else. I had to switch mine to pixels. Okay. So now we've changed the canvas size to 1084 x 2108. Shame on me if my math is wrong
. So for the stroke part, ctrl + a the whole photo and right click and select stroke. I think this is the step I forgot to tell you... I think there's an option to select the color. You can select whatever color, black or white. And check the opacity to make sure its not at 0 . You can also mess with this setting later its fun
. Anyway, type in the 50 in pixels and let me know what that does! I have a feeling it was the color as to why it didn't show up, but I am not sure lol. Hope this works!