Sun in First House: gives the traits of Leo, Leading, A bit egoist, commanding, need praise, helping & wanting attention and to be in the center of things at all times.
Moon in First House: gives the traits of the sign of Cancer, moody, sensitive, fragile emotions, sentimental and with an "instinctive" approach to everything.
Mars in First House: gives the traits of the sign of Aries. Action, Aggressive, energy & willingness to win. Always seeking new goals to ATTACK. Wants to get things done and/ or giving orders. Watch arguments and impulsiveness (noticeable in younger years).
Jupiter in First House: gives the traits of the sign of Sagittarius, Optimistic, lucky, and knowledgeable with a tendency to say the first thing that pops into mind. Sagittarius is the sign of good luck. Wish to lead & respect others. There is always a tendency to weight gain if not afflicted. Least desire to listen to anyone else.
Mercury in First House: generally, gives the traits of sign of Gemini and to a lesser extent, Virgo. Will tend to be in constant need to communicate, learn and move around. Seeking knowledge always, seems to be talking, writing, and running all over the place
Venus in First House:: usually gives the traits of the sign of Libra, and to some extent, Taurus. Libra side is balancing, artistic and charming but this position makes it more difficult to take action alone. Taurus side is more self-indulgent. On the negative side, there is a tendency to be lazy and a pleasure addict wanting to enjoy luxuries.
Saturn in First House: gives the traits of the sign of Capricorn, lazy, ambitious, lean and well organized, yet fearful and cautious. Best way to deal with this tendency to keep busy working for the goals.
Rahu or Uranus in First House: making one independent and gives an attraction for unusual sometimes weird things. A deep thinker, great planner having own rules and fundamentals contrary to the world. May be a tendency to shock people with personality, knowledge or traits.
Ketu or Neptune in First House: gives the traits of the sign of Pisces. always starting off in one direction and winding up in another and thinking "How did I get here?". Body without brain. This position may give a great imagination though. Caution - every now and then stop looking at those pretty dreams and spend little time with mundane reality.
Pluto in the First House: gives the traits of the sign of Scorpio, intense and secretive. can give orders to a stranger and they will frequently do as he says. Have intuition about the people meet for the first time is uncanny. Be careful about what you want because u will get it, for better or worse. If ever injured, this gives the ability to make an amazing recovery, back from the dead, so to speak.