You're doing good work there! Unrelated to the question you have, I wanted to share a computer shortcut with you so you don't have to take the extra step of snapping a photo with your phone.
If you're on a mac hit the following hotkeys: "command" + "shift" + "4"
This creates a snipping tool for you to drag a box around the part of your screen you want to capture, then it lets you save it as file to upload easily.
Reply back to me if you have any questions or if this doesn't work for you.