Which things? The wheelchair, the car, or the paper?
If you mean the websites, here is Imgur- a free site (I made a link you can click on from here, to save you any embarrassing trouble finding it). You just drag the photo onto the page and it uploads automatically. You then copy and paste the link here and you’re done. Easy peasy.
But I’m sure you’ll have a reason why you can’t do that.
Also, an 18 year old not knowing how to post a photo is the weakest part of your entire story.
You could’ve grabbed that picture off the internet anywhere. Which is why you were asked to post a piece of paper with it as proof that it’s really you.
Well, I searched it on google images and it didn’t find any matches, so if she did grab it off the net, she grabbed it from somewhere not indexed by google.