I am fairly new to sign making and on my roland printer I was trying to print a sign for our local napa parts store but when I started it printing you can see it is very blury or pixelated from how much I enlarged the image I assume, lots of squares pronounced in the image. It was enlarged to around 300% to the original image size. my question is can I clean it up or fix it or what can I do to help this. I know it seems dumb to an experienced sign person but im stumped. Any advice is appreciated....thanks