>>530454717
depth of field mostly depends on what you're going for, it doesn't always need to be that dramatic but having a small amount will help your character stand out from the background.
Lighting is a must if you want it to not have that flat look that video screenshots can have. I generally position the light close to the camera but off to the side to keep the character lit up but still show some shadows.
also play around with the wide angle coefficient in the camera settings.