Is there any kind of a general rule of thumb to what percentages one should use? Like 50% top, 30% base 20% mid. I'm guessing it would depend on the types of oils used. I'll say I'm doing a woodsy, citrus, hoppy beer soap w/ myrrh, frank, cedarwood base, grapefruit top, and maybe juniper, lemongrass mid. I might be over thinking this also.