try not to use the brake, it will worsen your situation and cause you to spin out more. I just accelerated untill i just barely started to oversteer, and then let off. Keep the car pointed towards the inside of the track and you almost go into a perpetual power slide. This can sort of go for the 2nd test too, but you will have to let off of the accelerator more often to correct the oversteer since the circle is 100m radius instead of 60m.