The stand should be suitable for a variety of laptop sizes, as it is modular. You can make as many or as few sections as you like and use different length rods depending on the size of your laptop. You can also change the angle of the laptop, too.
Step 1: Making a single section
To assemble a single section, follow the photo below. For a shallower angle, replace the white rods with green ones and the blue with a white.