Prepositions of location, in relation to Oscar and the sun.

Oscar is on (touching the surface of) the blanket. Oscar is over (covering) the blanket. Oscar is across from (opposite) me.
There is snow on Oscar's nose.  Oscar's nose is under the snow.
Oscar is behind the brown dog. The brown dog is in front of Oscar.
Oscar is between Andres's legs. Andrés is standing over (a higher place than) Oscar.
Oscar is above the snow (in a higher place than the snow). The snow is below Oscar (in a lower place than).
The fabric is in Oscar's mouth.
My hand is under the sun. The sun is next to my head.