Hi,

The “Raiser Improvement” is just an optional, it just looks cool. Use zero ceiling and floor layers for visible Infill-structure. I used 4 contour layers to avoid fragility.

I glued some foam (similar to the anti-vibration foam under the printer) underneath the Laptop-raiser so it doesn't glide. My laptop has a edge at the backside so it does not glide from the raiser. If yours hasn't got any also use some foam there.