So I have to design 3 billboards and this is pretty much my first time doing it where it goes to print. I'm used to designing small scale stuff so this task is a bit daunting.
I would just like to know how much bleed I should allow for a billboard of say 9 metres by 6 metres and also at which sizes and dpi I should be working at. I read some of the other posts that mentioned taking down the size to 9cm x 6cm with an output of 300dpi or 900cm x 600cm at an output of 30dpi. I'm not sure.