losing weight- Help!!!😭

How do I lose weight around my pelvic area and I have a round face and the Chubbyness makes it look rounder (I pretty much only drink water) and my arms and thighs and possibly calfs??? I want it all to get smaller and lean, I want a bigger butt and my thighs to be slightly smaller because ya girl has thunder thighs and I just don't want huge muscular thighs and I want to lean everything then gain a little muscle around my butt, belly and small bit around my upper arms. I'm new to exercising so I honestly don't know where to start or what to do. Help!!!