We highly recommend visiting a professional nurse or ENT to drain your ear.
If that isn't an option, the blood clot can be drained at home using an insulin syringe (28-31 gauge) if it's fresh (within the first 1-3 days). If it’s been longer than that, use a larger, 20-26 gauge needle, because the blood becomes more viscous over time. A 1ml syringe size is sufficient for minor cases, but if it’s a large clot (greater than 1/2” in diameter), opt for a 3ml syringe.