It's a great shelter for what it is, but I had to laugh when she said it was camouflaged.... as long as you're approaching it from one angle, then yes, it sort of blends in... but any other angle or from the air it is obvious it isn't natural and it sticks out like a sore thumb. If the aim was for it to blend in, and considering the amount of effort she's gone to, why not dig into the hillside and make it properly blend in? She could have added a small tube-like tunnel at the front to funnel air to the fire but with a way of blocking it when not needed.
I'm with John on the parachute to finish it off... it's the perfect shape and size for it and as John pointed out, gives you more workable space in wet weather.
One thing that does puzzle me is the hunting chair... its looks fixed in one place... why would you want it fixed?