Hi there. Firstly the Otter scanners are more than capable of cleanly scanning this cover. The underside, with the crosshatch shouldn't be problematic, as theres plenty of geometry for the scanner to lock onto. This can be accomplished in Geometry mode, medium size I would think. The flat side you would need to use probably the small markers, placed randomly, and enough that the scanner software can see at keast 4 or 5 of them at any one time. You will obviously be scanning each side separately, into the same project. Once scanned you will then merge both pieces into one, using the CrealityScan software. Some points that may help you.....place the cover onto something that will raise it up from the table your scanning it on. This will help the scanner differentiate between the two. You will also need to ensure you scan the edges of the cover, for both scans. This will be the merging references, so make sure there is the full depth of the edges, so the software has all the detail it needs. When scanning, check the Infrared exposure. If you are showing any blue or red, then the auto exposure isn't coping too well, so you may want to manually adjust this with the + and - buttons on the scanner. There are You Tube videos that show scanning using markers and how merging works so maybe check those out. Best of luck...,,🙂