If someone is dressed sprucely, they are dressed very neatly and nicely.
Dressing sprucely is usually a good thing and can make people think the person is very put together and tidy.
Examples:
He always dresses sprucely for work.
She walked sprucely into the room.
The man smiled sprucely at the camera.
The cat sat sprucely on the windowsill.
The queen always walks sprucely in her palace.
The children lined up sprucely for the photo.