For this one I have chosen a warm blue/purple palette. 
Fill the area with your chosen colours.
Just drop them in and allow them to mingle.
You may need to spread the colour to to edges, but try not to over work the paint. If you do you will loose the lovely variations and gradual change of colour, leaving you with just one even hue. 

Next, while it is still wet (but not shiny) gently add a small amount of a darker blue along one side in small triangle shapes to create the effect you can see in the image (left)
Again, don't overwork it. 
 Just allow the blending to happen naturally, so as you have a smooth transition of colour.

​Leave this to dry. 

To finished off the details for this feather, using your white pen first draw in the center vein. 
Then get dotty! 
Remember to add variation to the sizes of your dots, this creates visual interest.

I love to incorporate dots into lots of my different designs. They really add a great visual energy!

​