I centered the desk but it still looks off

Do you also intend to use this space to dine, or do you have another area in the house for that?

I think it's the style of the desk that throwing it off for me. I envision a more modern clean line desk or table. And longer that what you currently have.

Can you use a dining table as your desk? Maybe add a buffet cabinet to hold all your work stuff when you are using the room for dining.

The light is centered on the door? No way for a dining table in that space. Why do you think it was meant to be more than an entrance? The desk is too small. Looks like it belongs in a child's room.