I think my solar cooker is pretty good. It reflects the light to the right spot and it works well. Type of my solar cooker is box cooker. The reason why I choose the box cooker is box cooker is much easier to make than the other kinds of cookers. Simple and easy to make is very important because a lot of developing countries don't have nice materials like us. Also, they don't know English so we can't teach them how to make solar cookers. Because of these reasons, we have to make easy and simple, less-material solar cooker.  I saw some pretty interesting solar cookers on internet, and a lot of them has reflective material like mirrors or aluminum foils. I think I have to make my solar cooker with reflective materials. So far, I think my plan is pretty good and I'm keep researching for that.