Once you have the image file name click on "Insert image" go to the "From URL" tab, paste the link in the appropriate place, make sure to un-tick "Retrieve remote file and reference locally" and Bobs your uncle.
Note: Bob could also be your Aunt, but, I think that's a discussion for Moe's Tavern.
This is a newer one. The other weekend. It was (unofficial) National Crate Day. I'm also wearing a kilt. "I thought someone said National Kilt Day?" I am awesome. There are some posers on the van with me. You can clearly see my discontent.