WHAT IS A LAYERED FILE?
When you create art it is usually set up in layers, then flatten for layout Example: Layer 1- Text Layer 2- Shadow of text Layer 3- Object A Layer 4- Object B Layer 5- Background If art is flat the conversion takes longer. I will have to go back and break the file back into layers, moving the layers to get the other perspective image. When the art is flattened you lose the info that was behind each item- so we would have to clone or recreate what was lost. A layered file means (HOURS LESS) work. COMPLETE IMAGE? Content for 3D conversions need to have the trim/bleed references. It also means that if you want image to pop off the page it can not be cropped or trimmed out; however, for items that are pushed back into the page, cropping or trimming out is okay. Remember to keep items of importance away from trim. If you have half an item running off the edge of the page you will end up with more or less of that item, depending on the perspective.