The next step is to put a rough coat of cement on the parts. Many make the mistake of making this too thick especially kids! Children love to play in cement so you need to exercise a lot of control. You just want to cover the mesh. Cement gets heavy so you want to keep things as light as possible. For small pieces I mix my own sand mix. This is 1 part portland cement and 3 parts sand. When I am covering a large project or having many projects going a once I just buy a 60lb bag of commercial sand mix. Sometimes it is called topping mix. You can buy smaller amounts at a local hardware store. The big stores like Lowes only sell 60lb bags. I think 40lbs is the smallest amount. This is what I used this time since I have a lot of personal projects going on. This is basically using a typical building construction technique (a house stucco finish) for art. Artists can learn so much from the building trades. Something to remember with cement work is anything loose in a form will crack. It is a very forgiving medium but you want to try to make your forms as stable as possible. Tomorrow I will brush off the excess with a course brush or an old file I only use for this work.