Small Tray for prusa mini

I couldn't find a suitable size tray to clean up around the printer. So I drafted. 

I think this is a suitable size for printing with the Prusa mini after checking the flatness of the 75*75mm sheet.
The walls are thick enough, so I don't think there will be any difficulty in printing.
V1 is vertical at the end, V2 rises at 45 degrees and then at 30 degrees.
The simple structure makes it easy to use for adjusting printers.
I think this is a good model for checking surface patterns and infill.