So in order to build muscle you will need to apply a little resistance. More than a little, really, to build. So you might start with some 8- or 10 lb weights and try to do 3 sets of 8-12 reps. For your biceps, of course there is the curl. triceps you might bend over a chair or something to support yourself, and take the weight from bent slowly to all the way straight, and flex there. Maybe you're wanting to get the deltoid curve as well? Where the shoulder meets the arm... if you take the weights in 90 degree arms, and lift outward as though you were pouring something from a pitcher. Keep your neck relaxed! I like to do a mix where I start with arms down, curl them both up (and use your own resistance as well as the weights), then shoulder press them both up over the head (clink), then come down the same way because the releasing part is at least as important for building. Also your good old Sun Salutation does some good stuff, especially if you do a bunch of them; the part where you go from plank, slowwwly lowering to the ground with your elbows facing back and hugging your body, then either pressing into upward dog, or releasing and lifting into cobra...
It's a good thing to think about since for the most part our dance doesn't give the arms a strength workout.

This is funny. I used to have some pretty manly biceps from being in drumcorp and even though i stopped working them they still hang around i really don't like them. So here i am trying to get rid of my arms and someone else is trying to get them. Guess it's always something.

I think you have beautiful arms Natalie. But if you really want em, the way i ended up with "guns" was from holding stadium brass cymbals about a foot away from by chest with arms slightly curved inward (palms facing each-other) while engaging the entire arm and upper back. I'm assuming is you use any heavy weights and hold them out in a similar way for long periods of time it will have the same affect. Your biceps will burn like hell, but it works. Holding weights straight out to your sides and then very slowly lowering and raising should do about the same thing but may work different muscle groups.

If anyone can elaborate on this type of technique or correct the posture please do so, i'm remembering from YEARS ago and might not be explaining very well.

Speaking as a former US Marine.... I suggest pushups, dips, curls (single and double), and a weight ball. Weight balls, IMO, are more fun and handier than the usual 5 -10 lb weights. You can buy them all over, even at WalMart.

If most of your body is long/lean muscle, you may need to keep a log of your protein and increase your intake by 10-25% (especially if you're vegetarian or don't eat much meat).

And, of course, I always recommend yoga for tone and balance.

:)
Feiruz