I made these a while back, and I'm really proud of them. Anything in quotation marks is because the Shannon Messenger herself used them on her artwork. If you want, you can add them to your profile. Warning, though: There's a LOT.
I think that if you're on a computer, you can right click, then choose "Save As", and if you're on a phone, you can long press the image, then click "Download Image"
You should make a big version of each of them for wallpapers.