Lots of great tips here, but one that works pretty well for my group, is to think of myself less as an actor playing a character, and more like a narrator. Which is to say, I'll often describe the actions and/or thought process of my character before saying what I think they'll say (in my normal voice).
This is easiest for mages since cantrips like Prestidigitation become powerful roleplaying tools, but even something like holding a Fire Bolt in the air over the person you're trying to intimidate can have an interesting affect on the mood of the scene.
Looks like... one of the Number islands from FireRed? I like the scale we get of the normally unreachable highland area.