You should work with css file and make content-headder dissapear by using display:none. Choose the line wisely and make some experiments with them.
Then just insert the thumbnail into the achieve’s message to user.
http://clip.corp.mail.ru/clip/m767/1408548777-clip-46kb-Krxmz0BC6yjG.png
Works for me!
Same question and request
Achieve’s image in profile page is default practice. It was quite a surprise when i discovered, that achvs list has no thumbnails.