There are two sizes here - One small 4.5" square that is intended as a patch or a little fidget square that can be printed on a 180mm x 180mm build plate. The second is a larger 9" grid to be printed on a 256mm x 256mm plate. You can size them up or down if you'd like. They all have 3 layers at .24mm layer height - to be printed slowly - I like using 35-50mm/s. You can adjust the layer height if you'd like to use a much thinner, or thicker mesh. I've found .24mm is a great average.
You can either use the preconfigured 3mf file, or download the STL and try setting up your own parameters.
You can then sew these onto articles of clothing, make repeat prints and sew them together to make one large piece - I'm working on a dress right now!
As always, if you have any questions, send me an email at Kaizen3DPrints@gmail.com