Combine dry ingredients in a bowl. Whisk to remove any clumps. In a separate glass bowl, mix the wet ingredients (make sure coconut oil is melted). Slowly pour the liquid mixture into the dry, whisking as you go. If mixture begins to foam, you may be adding the liquid too quickly. Once combined, take a small amount in your hand and squeeze together. It should stick together fairly well. If still too powdery, add a tiny bit of water until it holds together. Fill mold with mixture. Allow 10-12 minutes to dry. Remove from mold and allow at least 8 hours to dry. Once dry, wrap in plastic wrap or store in a dry place until ready to use.