Pre Press is not design. It is a set of techniques to prepare something for the printing process. I have a lot of experience on Pre Press for many printing technologies. I can help you with pre press on project or long term remote support basis.
From my experience, defining workflows is an absolute must. It makes a huge difference in day to day work and it always brings savings. Very often a few nudges here and there make a significant difference. I am sure working together we will make a difference for you.

