Look through the Files section for existing files using your equipment or models with similar model numbers. Almost all of these have artwork with them that's more interesting than the default artwork that came with these remotes. Whoever has uploaded the artwork knows that you (as I) will steal it and use it, so go ahead and do that.
You'll have to learn new commands where you can't find existing ones, and you'll need to use a computer to program macros, for instance
DVD Play TV On Receiver On TV to Video 3 Receiver to DVD skip to DVD transport panel
which is a sample of what you might want to put behind a single button on the Home screen so one button push does everything.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw