How can I make my own laptop sleeve?

Basically you are going to get some fabric (preferably something like neoprene), something stiff or cushioning, cut the fabric to the dimensions of your laptop plus room for sewing, and sew it together. I found a few different instructions that you can check out to choose the one that works the best for you. These are http://www.instructables.com/id/Laptop-bag/, http://almostfrugal.com/2008/09/12/frugal-ikea-hacks-make-your-own-laptop-case/, http://www.instructables.com/id/Laptop-Sleeve-from-a-FedEx-Envelope/ and http://arstechnica.com/gadgets/news/2009/08/how-to-make-your-own-laptop-sleeve.ars.