Prepositions: to / at / over

This specific object

Please look at the screen

Did you look at my email?

Look at this artwork!

Don’t look at me.

She’s pointing at something

He’s laughing at Takuma

This general direction

Please look to the sky

Now if you please, look to the north

This specific direction

Look over here

Look over there

Look at that bird, over there!

Go from start to finish

Please read over my recommendation

Did you read over the email?

Please look over my application

The plane flew over the city