Mix equal parts A and B of Amazing Clear Cast Plus resin and stir for two minutes or until there are no swirls visible.. I made a total of 25 mL and then split it into 3 cups.
Add green, blue, and gold mica powder to the 3 cups. The amount was less than 1/8th teaspoon for each color.
To prevent overfilling, use plastic droppers to add a drop or two of resin at a time. Be careful as the droppers can also pick up some air and then spit out a bubble instead.
Use a small dotting tool to drag the resin to the edges, corners, and narrow places. The engraved wood will likely soak up some of the resin. Be prepared to add a little extra after letting it sit a few minutes.
Use a small bit of paper towel or a Q-tip to wipe away any resin that "escaped" the engraved areas.
Allow to cure for 24 - 48 hours (climate dependent).