Gradients

On my posters, I had used gradients for a colour blending effect.

I have used this technique on older projects, however on this project I used them to a greeater effect, such as the beam coming off the moon in my second poster:

I did this by making a polygon shape into a trapezium, and then adding a gradient which starts off light but gets transparent at the end of the gradient. I then erased the overlapping parts on the moon.