Hi xiaoguang1027,
There are a lot of previous threads asking for feedback on kickstarter campaigns, definitely check those out. It would be better if you post more about your product research and development. This is a product design forum overall, and we love giving feedback on that specifically.
Your campaign certainly looks good. Clean and informative. As for the product, if I were an avid notebook user, I’d want my notebook to be accessible immediately upon opening the sleeve. I don’t really understand the need for the pocket.