No matter how hard or long i work out i cant see any progress in my arms?

I am 17 and well i am in dance i work out everyday and my arms every other day. i cant see any defination in my arms i have been doing it for about a month and nothing. i can feel my arms get tired but thats about it otherwise its all jiggle. ps (i am female i dont want to get body builder strong and i dont want to use steroids.) thanks