Start with the setting, the main colour family and the contrast you want. Then compare real product swatches beside the hand instead of choosing from a colour name alone.
A useful comparison
Put one warmer and one cooler option next to your first choice. Keep the lighting and background the same; otherwise a change in the photograph can look like a change in the polish.
Make the choice repeatable
Save the product code and selected size. A reference image can explain the mood, but a code identifies the actual product for a later order.