Please re-rescan (

) with something heavy and hard on top of the box so it's absolutely flat as now the scans have blurry parts where the box is not in contact with the glass.
600 or 1200 DPI is OK (600 preferred to minimise overscan relics).
And please without any after scan filters (descreen OK when scanning, but we prefer it not done afterwards as artists like as raw material as possible).
Thank you and welcome to the site.