what you're talking about is pretty basic really as far as cut goes - material shouldn't be much seeing you're only a small fry! so all you have to do is find someone that can sew

fwiw - i've had clothes made in the past - i've cut down on costs by cutting the material for seamstress - so it takes a few hours of her work away... scope out a few websites (simplicity, burda etc) - look at their patterns, find what you're after - then go and get the pattern, and get it made

you're highly unlikely to find a simple little black dress for less than $150...