I need to "buy a vowel" here and figure out the missing step... anyone figured this out?
I take a pic with my cell phone, which is automatically "seen" by the Google Photos app. I then open the app in my phone and add the new pics to an existing album or create a new album.
I have a GMAIL email account (free), so the pics are automatically backed up to my Google drive (cloud). I right click on the image (in Google drive), and click on "shareable link", which generates a link that is automatiicaly copied into the clipboard.
I then click on the INSERT IMAGE icon above and paste the link on "SOURCE".. and keep getting this tiny box.... if you click it, the picture is there.. 
Any hints??