Photos would help is help you.

I do not like sconces in bathrooms so i use nice light bars with down lights since the light is needed to light my face and the space . I do however in larger bathrooms do both pot lights and the bar . I rarely do round mirrors so maybe post pics of both her ein a comment .

Down.

I prefer down visually and for better lighting. If you look on line, 99% are downwards.

Random thoughts:

- Especially in a small bathroom, go with a larger mirror -- 42" edge to edge with a frame. It'll make your room feel larger, and it'll be more functional, it'll allow you to see your outfit instead of just your face.

- Ideally you'd have two sconces (or two pendants) flanking the mirror at face-height. This'll put the light where you need it, and it won't throw unflattering shadows on your face.

- Regardless of where you place the sconces, place them in the "downward" position. This means bugs won't die in your globes, creating another chore for you.