Had another play with the Frosted Embossing Technique. Wondered if using very thick embossing powder or UTEE would show off the technique better. Used the same butterfly stamp, clear embossing ink and UTEE. Caution when using UTEE, the bits will fly around if the heat gun gets close to the powder too soon. Some crafters will start by heating the piece from underneath.
Here's how it looks after rubbing on Perfect Pearls while the UTEE is still warm. I reheated the piece after rubbing on the Perfect Pearls, seem to help them shine.