Avoid uncovering it until it's cooled. Allow the soap to sit in the uncovered mold for another 12 hours. Loosen the sides by wiggling the mold a little. Turn the mold over onto a clean counter. Cut the soap into bars with a knife.
Some people use a miter box to make square corners.
Allow the bars to cure for three to four weeks before using. Smaller bars cure faster than larger ones. Use distilled bottled water. Soap colored with liquid food coloring tends to fade. Be aware that leaves and flower petals will go brown from the heat.