I recently did a condominium for a young woman and she was very conservative and cautious in using color. She'd purchased Ralph Lauren parchment colored paint and wanted me to apply Ralph Lauren candlelight glazing over it. After doing both her entry and bedroom, she really didn't like the effect.
This can often happen when you do not do a sample first before you begin a project. Even seeing those little small 2 inch samples is not going to help you do to so many variables of existing wall surface color, texture, ambient lighting, application and so on.
So I reccommended using a decorative sponge roller and applied a pearl glaze over all the surface which gave it a beautiful shimmer, yet a nice mottling effect. She was very satisfied and said I had a good vision and technique.
Sometimes you can make great things out of mistakes. Never be afraid to try something innovative and different whether in life or in painting. Use different tools, blot with paper towels or newspaper, stipple with various brushes, thin paint with water or glaze, use rags, tile sponges. Most of all have fun, listen to some great music when you're doing it.