I'm doing layout design for an LP cover and the record label insists to have print ready PDFs and .psd files, making use of a template they provided. They also want 3mm bleeds along the lines of the artwork inside the template. Now I know how to add bleeds to the document edges, but I'm struggling to understand how to add bleeds in the middle of the artwork?
Here's a screenshot. What I mean is that they want bleeds inside that template that depicts a foldout of an LP cover.