Ok ... here we go ...
First, I took a piece of foam and figured out the shape that I wanted. I didn't meant for it to look like Florida, but it kinda does ...
Here's what it looked like:
Then I started shaping it with a file and stuff:
Then I took a heat gun to it to give it some texture:
I then attached it to a box so that I could work both sides at the same time:
First, I used grout called Hemp
, mixed with water and something called Fortifier and slapped it on:
After it dried, I did some more shaping:
Another coat of Grout to give it some more texture:
Then, I did the final coat with a darker colored mortar, again mixed with water and fortifier, but i made it VERY watery:
As it was drying, I worked it with a sprty bottle to kinda wash away some of the mortar so that the lighter grout color would come through ever so slightly. It's really heard to see it in these pics:
And here are some final pics. It's really hard to see the color differences and the texture, but it's there:
whadda ya think?