So when Rossignol says:
"-work in CMYK color mode;
-save your file in .psd format with all layers - save your image at 300dpi (1/10 or 17.8cm of the final graphic size)."
That means that i can just make the canvas 17.8 CM long at 300dpi for my master? or should i make a 300 dpi 178 CM master canvas, which happens to be a massive file. are they going to be able to screen print from the smaller one if mine is chosen without it being in vector form?
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