Step 1: make a dossier pic
take the screenshot you have and copy the picture of the Doff with frame to a second file. Then resize the new file to match the ones on the Wiki. Upload it using the upload file link on the left side of the wiki page.
Step 2: add a "M'Roswor" entry to the table on the wiki page you linked.
Step 3: click on the M'Roswor link to make a page for it.
when you do this use the template drop down to select the appropriate template. Then fill in the data.