If you haven't smelled pure civet before, you'll be in for a shock. You'll probably want to keep the bottle inside another container, and you'll have to dilute it before using in a mix. My suggestion would be that you start out with some small batches (5-10 ml each) of the CK, adding something different to each to see what the effect is. Get some calibrated pipettes so that you know how much you're adding. Keep a record of what you're doing, and label each bottle. Remember, you can always add something, but you can't take it out once it's in, so be conservative at first. Once you find a formula that you like, you can go ahead and make a larger batch. Have fun with your experiment!