I printed the picture at 130% on H2D. At the time I thought perhaps I should go a little bigger, but very happy that I did not. I printed the frame with PETG-CF at 217%, the absolute largest I could get on the build plate and you have to use the left extruder only. 218% would give error. At that size the picture fit with ~0.5mm all around. 216% probably would have been a snug fit. Currently printing the "X" support at 217% as well. I might need to modify the "X" a little to give it more support