Thank you

I used a little piece of metal that was like a toothpick and a box cutter. I went and used the box cutter to basically draw / slice the lines of where I would carve then since the foam is made of up tons of little compressed foam balls, I would slowly chip away the individual balls a few at a time.

Also, since the overall piece is made up of the individual balls compressed together some become loose from removing surrounding ones so when I finished I used an embossing heat gun to heat everything together. I wish I would of heated it bit more to give more of a bound because when I put on a few layers of the quikrete some areas of the foam pieces did fall off from brushing over it, especially in the thinner foam areas on the dragon.

The other thing I decided to do with this background is to mix the acrylic paint in with the cement. Which I really love how it's working out. You just put different colored coats on then you can sand down to each of the different colored layers and it blends in really well.