I am a beginner with plaster. (obviously!) I have been experimenting and experimenting and trying to figure out how to get a good antique-looking finish on my plaster hand and foot prints. This is the look I am going for:

I want to get in all the crevices and creases of the prints and perhaps have a slight shadow cast around it. What kind of product/technique can I use for this effect? I am pretty desperate for an answer, so I hope this is the right place to ask. I know there is a simple answer for me out there somewhere!

I emailed the company who does these (in Britain) and they would not divulge a thing. I don't blame them, but I would still really like to figure this out. Thanks for humoring me...