Hi all, looked over the rules so hopefully this is a thorough enough request. I have no formal training in photoshop. Everything I've learned has been through YouTube tutorials and other online tools. However, when trying to find the answer to what I felt is a pretty simple question, I can't find a damn thing.

So I have been tasked by my office to create a timeline poster with 6ftx3ft being the dimensions. Obviously I'm an idiot because I began working in those dimensions -72x36 at 300 resolution. This is the largest thing I've ever had to build and it needs to be printed.

So, building it at those dimensions has to be the wrong way, right? What dimensions should I be working in? If this is too stupid of a question for you guys, sorry for wasting your time.

Thanks for the assistance.