How do you mix foundation colors to make the right shade?
user
I’m happy to help! Foundation powder tends to work best when it’s complementary to your skin tone, but you can also play with the contrast of the shades and use colors that are more similar to each other, or some other combinations. The key thing is to experiment with different shades, and to be patient until you find one that you like!  Typically color mixing is easiest when powder colors are added together in very small amounts, starting with just one or two drops of powder or a very small dab of foundation. The best approach to finding your ideal combination of shades is to test different makeup brands and different colors. And don’t worry if you don’t get it right the first time — it can take many trials to find the shade that works best with your skin tone and style.
assistant
How do you mix foundation colors to make the right shade?
user
Hm, this is a difficult question!  Essentially the color of a foundation is created by mixing various shades of red, yellow and brown, in very precise ratios.  It's very difficult to mix these colors correctly by eye, so I would recommend using a color wheel to choose the shades that you will be mixing, and then carefully measuring the ratios of these shades in order to get a very precise final shade.  An online color wheel can be found here: http://www.color-wheel-pro.com/color-wheel.  In general I would suggest a final foundation shade which is slightly darker than your natural skin color, but still close to it in tone.  You can experiment with different shades of red, yellow and brown on the color wheel to find the right combination for your desired final shade.  Hope this helps!  Good luck!
assistant
How do you mix foundation colors to make the right shade?