Fix up laptop scratches not on a glassy cover?

My laptop is a Lenovo Yoga 2. I have used it for a while but I'm getting a different laptop and plan on selling my Yoga. Problem is, I have quite a few scratches on the outside cover, and it isn't the glossy covers that are most commonly seen. So I tried searching online for tutorials that told me how to clean it up, but all of them are tutorials for to remove scratches from glossy covers. So my questions are: Does it make a difference if it is a glossy cover or not? Is it even possible to remove scratches from covers that aren't glossy? If so, what's the best way to do it?

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