First thing to try - edit your atmosphere and set your sunlight settings to 'no ambiant' values (that is, maximum setting to light from sun and from sky). Once that is set, place a few spotlights with no shadow and low intensity around your scene to simulate multiple ways your light shines onto the unicorn. For example, one light can be coming from behind the trees on the left, one from the right in front of the unicorn, one from the sides... It is a difficult scene to light since it is set in a dark atmosphere and rainy day. One would expect a dark result - this is why it looks like a car is parked in front of the unicorn with headlights on. Think about additional light sources to enhance the scene. Glowing mushrooms ? shiny fireflies ?

• agiel - www.linfa.net