These files are already included in the In The Red digital package :)
Free maps for use with the Quest: In The Red. Contains three gridded combat encounters set in the city, a design-it-yourself wizard's tower, and print'n'play paper miniatures.
You have permission to print and modify these files for personal use. You can find the whole In The Red campaign pre-formatted on the Roll20 VTT.
If you would like to stream or record media using these files, please contact Brian@doad.co.uk.