If you have images on your Google Drive that you want to add to MR posts, then you'll need to share them, which makes them publicly accessible, then get their URL, then put that URL into the IMG tags that Weaselboy showed above.
Here's Google's info on how to share files and folders:
https://support.google.com/drive/answer/2494822
With the file shared, you should be able to get a URL for it. Expand the heading on that page "Share a link to the file". That URL is what you paste into the IMG tags.
I found that link by googling:
google drive shared url
You can repeat the search and find more info.