I don't have a high-resolution file, is that okay?
Edited

Yes, don't worry if you do not have a high-resolution file! In fact, most of our customers do not have high-quality graphic files. If your order contains a low-quality graphic, our designers will convert your image to a high-quality graphic after your order has been placed.

Once this is complete, we send a high-quality mockup containing the graphic to you for approval so you know exactly what to expect with your print. After you have approved the high-quality mockup, payment will be collected and we will begin printing your order.