When it comes to printing posters for advertising, it is a must to coordinate all your poster elements into a single coherent whole. You would not want to print posters that are just a hodgepodge of different odd elements right? So you should have a good plan for coordinating the different elements in your poster design.
If you do not have this plan yet, then maybe I can help you out? Below is the typical plan layout for properly coordinating the design when printing posters for any purpose. Read the items and try to follow them if you want.
1. Decide on the central theme. First up, you need a central theme which will serve as the main guideline and coordinator of your color poster design. So make sure you flesh out the theme you want in a very specific way.