I put an archive in the post body when posted, just added your mirror to it now.
To make it more attractive to viewers, the screenshot should be the link of the post and [Source] & [Archive] in the post content.
I noticed posts shared in that format are getting more views.
I tried something similar to that approach for most of a year up until ~6-8 months ago, put the archive in as the post link to avoid poalrs opening the source. What ends up happening was someone else would post the same articles a couple of minutes-hours later and POAL doesn't flag it as recently posted for them ... because I had used an archived link of the same article as my post link. That was happening on 3-5 of my posts per day, up to 20% of my typ 25 daily posts. Very annoying. The same thing would happen if I do as you suggest, put a pic8 screenshot in as post link with archive and source links in the body. If POAL would picked up all links included in the post body and the post link, that would cure that problem of people not realizing that article was recently posted.
POAL doesn't flag it as recently posted for them
It does if the link is identical.
someone else would post the same articles a couple of minutes-hours later
That's because the posters decided to submit them anyway after getting a warning on submitting.
(post is archived)