I've made it so its a template setup, all you need to do is a quick google image search for the creature/npc you're looking for and insert it into a layer and boom, you're done. As always if there's interest i'll share the Photoshop file, but wont be able to share the art shown above - but a quick google search will do that for you.
Here they are 'in action' on Roll20 :
Im aware i've only got medium sized creatures here, i'll knock up a large variant tomorrow if I get time.
The only issue is when moving tokens infront/behind each other you might sometimes needs to send them to the front or back through a quick right click, but they do look good in play so I guess its down to you if you're willing to put up with it.
Anyways Happy gaming all.