Footwork is footwork is footwork.
Theres footwork for punching, moving, circling, even slipping (well in my opinion).
Footwork could be as simple as never crossing your legs when you circle, sidestep or move forward. Or as subtle as rotating your lead foot when you hook. The kind of rotating movement like you're putting out a cigarette butt.
So yeah, just practice in your stance moving backwards and forwards, make sure you're balanced everytime you set your feet down. Not too big steps, and dont cross your legs. I mean, its simple and its mundane, but it works.
Also, learn to skip rope too. It helps so much i cant even explain it in words. The rope will turn you from having two left feet to being able to ali shuffle round the ring. Yes, it works that well.