Profile cover image
Design and Skin Customization
Better that its in its own question/thread.
The file your probably wanting is the profile_header.tpl file for your skin.
So for elastic, it would be:
/skins/jrElastic/profile_header.tpl
You could add another row to that template above the existing one:
<div class="row">
<div class="col12 last">
// PUT YOUR IMAGE IN HERE.
</div>
<div class="col12 last">
<div class="profile_name_box">
......And use the Form Designer to alter the Profile options to allow users to upload the image. (might want to figure out the correct dimensions first and put that in the Form Designer options as a note.)
"Using the Form Designer"
http://www.jamroom.net/the-jamroom-network/documentation/getting-started/1275/using-the-form-designer
great to hear its of some use.