Use the word i to show location

Use i le to show that something is at or in a certain place

i le fale
at the house

i le ta’avale
at the car

To add more direction like: above, behind, or under a certain location use i and the word for its position: e.g above, under, behind, etc.

i luma
in front

i tua
in back (behind)

i fafo
outside (literal: at the outside)

Then use o le followed by the location.

i luma o lou ulu
on top of your head

i tua o le polo
behind the ball

i fafo o le potu
outside the room