If you are new to pickup patterns, I recommend that you start with something simpler and have a tutorial over here that you might like: Greek Key Pickup Tutorial
The above pattern uses a progression of 5 pattern colors, almost a rainbow, against a black background. The visual effect makes the color bands appear balanced to my eye in spite of the fact that they don't all use the same number of threads. With some of the colors, I used 3 of each and some 4 of each. Below is the threading draft for this pattern. The top row are heddled and the bottom row are open warps.
The pickup pattern is below.
Background threads are not represented on the pickup chart, only the pattern threads.
Below is the threading draft for it. The top row are heddled and the bottom row are open warps.
The chart for the pickup pattern is below. The colored squares correspond to the colored pattern threads in the woven design and the background threads are not represented. You can see how I achieved a nice effect by picking up two chevrons and then creating a space in between.
When the pattern threads are not picked up, they show as speckles in the design.