Stay calm, it’s going to be ok. If you are unsure of what you are doing, the best option for all parties involved is for you submit the native file. This means the illustrator or photoshop file you used to create the artwork. When using this option there are a few things that are of utmost importance. First, files should be full size (this means if you are having a 3’ x 4’ banner made, your file should be 3’ x 4’ with bleed, this is especially important for photoshop files). Second, outline all fonts used OR send all fonts used along with the file. Third, outline all fonts used OR send all fonts used along with the file. It’s too important to not mention twice. Which brings us to… Fourth, any placed images must also be submitted along with the file.