Any designs that you submit via the Design Tool or File Upload are thoroughly checked by our design team to identify any issues. This might include properly centering logos/graphics that might be slightly off, combining color variations, making sure that any graphics used have a high enough resolution etc.
We will always send you finalized mockups for your approval before proceeding to production.
And we go a step further too… during the different production steps, we will keep you posted by sending you pictures, so that if you notice anything wrong, we can have it corrected right away!