I’ve just had my first Etsy sale and it’s an A2 print. My original artwork is about 1,000 by 1,700 pixels. What’s the best way to prepare it so it prints sharp at A2 with printShrimp? Should I upscale in Photoshop to 4,961 by 7,016 pixels at 300 DPI, or rely on the printer? Any tips to avoid blur? Will I need to do this with every print? This bit continues to confuse me…..