I have made a few batches of soap. I would like to have a "base" soap recipe and then add the goodies to it. Is that the way it's done? I am ready to try adding essential oils and herbs, spices or oatmeal. Using the WalMart recipe, I see the suggested amounts of essential and fragrance oils to add (and have a few questions about that) but what about other stuff? From the recipe "I use between 3 and 7 ounces of Fragrance oils or essential oils for this whole batch, depending upon the quality of the scent." How do I know what the quality of the oil is? And then how do I choose the amount? I'd like to add (not all in the same batch) fine ground oatmeal cinnamon (or other fine ground spices) lavenadar (or other ground herbs) Also, I'd like to order bulk oils (especially palm oil). Where is the best place for that? Thanks!