As a supplement to the FREE step by step YouTube video tutorial I am pleased to offer you Sewspire Design Board #041321.
This is a PDF for my latest Custom Laptop Sleeve and it includes the pattern measurements and concise written instructions + room for your maker notes.
As a bonus, I have also included the formula for you to calculate the measurements for different size laptops
The step by step video tutorial can be found here:
https://youtu.be/1pLT5_Dot2Y