I fall asleep in one of two ways, with the most predominate one (about 80% of the time) being on my right side facing my wall, in a position very similar to the fetal position. If it's one of those nights that take me a lot longer than usual to fall asleep, I'll try sleeping on my left side, with my left arm under sandwiched between my two pillows, and my body stretched out.
I always have to sleep with my blanket on, though. I barely even like my feet sticking out in the middle of summer, so I'll just have the fan blowing on me.