About the shadows
For dark skin, golden shades are good, which will give a special shine. Blue shades or greens also look advantageous, which are best applied with the smoky eyes effect to highlight the eyes and make them even brighter. For light skin, pink shades, as well as blue or orange, are more suitable.
In fact, the most winning color for everyone is pink, it goes to absolutely everyone, you just need to make it out in tones. For fair skin, it is advisable to use closer to pastel so as not to emphasize pallor, or vice versa - fuchsia. For olive skin, all tones are suitable, and for dark skin - as bright as possible, since light pink will create the effect of fading.
It is also worth paying attention to the light during application: some colors, such as orange, golden or pink, can merge with the skin to the edges of the eyes, they should be well shaded until the clear transition line practically disappears. So the make-up will look neater and more professional.
By the way, try using liquid shadows: they create the effect of a wet eyelid, now this is the latest trend in fashion.