Looks good especially after you finish thatching it. It is so important to make that first experience for the kids one that they will remember as pleasant so don't be shy on the thatching and heat reflector and the hot chocolate maybe even some smores?
I really think it is great you teaching your boys such cool and useful things. To many parents let video game, and cable television raise their childeren. I have been teaching my three year old surval stuff already. Kids are very reseptable at early ages as long as you make it fun for them.
We have to remember that our children will be the ones that inherit the mess we have made so we need to prepare them.:thumb::thumb: