Before I got two far in both of my current projects I researched to ensure that when it is time to, my artwork is already print ready. I sometimes find that I botch my work together, and I want this process to by much smoother.
The printer I requested a quote from previously is a specialist comic printer in the UK, and has some really helpful resources on his website which covers everything you need to get ready for print, including discussions on bleeds and templates to work towards: https://comicprintinguk.com/process-getting-your-comic-printed/
Below is the template applied to my work showing bleed (black area) and safe area for my artwork (outside of the blue area).
