>>55701108Draw a normal girl, and you're already halfway there. That's your base.
Start drawing on incremental layers of weight, small and slowly at first. The hardest part is understanding how the fat interacts with the rest of the body, that's why you gotta start small. Once you're satisfied with that, draw her bigger over your same base.
This way you'll have a better understanding of weight and volume in the future so you could then just cut to the chase and draw at the wanted size.
>>55701133It's cliche at this point but the best advice I can give is pick up a pencil and start doodling. Make no mistake it'll be shit at first, but as long as you're mindful on what you're doing you'll start to get better overtime.
Some people recommend books but the process is most definitely very different for everyone so hey, maybe those work for you but the one part no one can skip when learning to draw is actually drawing.