A Child big enough to walk on their own is a dream of happiness in both domestic and business affairs. Seeing black indicates you are in for a lot of trouble and hard work. To dream of people disguised by a mask predicts deceit from unsuspected sources. Death in a dream indicates an approaching release from all your worries. Often times to dream of the dead signifies news of a birth. Freedom from worry is forecast in a dream of relatives, would also include success in money matters. If you are aware of the number of people or things in you dream, it signifies an increase in personal power and prestige. To remember the numbers in your dream forecasts good luck ahead. Dreaming of specific numbers requires referring to the meaning of those numbers in numerology. The meaning of the number 3 is vision.
I'm not sure what is going on in your life right now, but I would say this is a very positive dream. The only negatives are the color black, and the mask. Maybe you are under a lot of stress right now at work and home that includes financial matters??? However, it appears your subconscious is recognizing all your work and troubles are about to be rewarded. Consciously, you may not see it because you are up to your neck in alligators. Deceit from unsuspected sources. Not sure. Your cousin may play into this in some manner as a way of support or help maybe. On the other hand, if it's money, maybe he took a life insurance policy out on you.