User blog comment:Bowserdude/Totally Original Q&A/@comment-24530269-20161026132033/@comment-26458478-20161027121634

I download the template, put it in a blank slide, and then I get the pics for the combatants (usually with a transparent background). After I position the combatants how I want them, I put a background behind them. Afterwards, I copy the whole thing (ctrl+a, then ctrl+c) and paste it into whatever photo editor is available, and I crop it around the template.