I'm familiar enough with Photoshop that I'd like to have a go at creating my own product covers for the graphics I see on sales pages so I have something to give a graphic designer for an virtual DVD cover or eBook cover. However, I'm not sure what the typical dimensions would be for those images that graphic designers would apply to those templates. Does anyone have any guidance or advice? I basically don't even know how to start my Photoshop document because I don't know what dimensions to enter.
Thanks so much!