Like every Steven Universe character, you can use basic shapes for their body. Ruby and Sapphire are easy because they are basically a bunch of circles and squares
After ya do that, wall you gotta do is fill in their details, which is fun because they’re so simple, i left my guidelines in so it might look sketchy
idk even know how to explains necks here is my attempt after a suggestion
line of action, bunch of lines, considering poses helps a lot in making it easier??! but have fun, take these tips and make it better. Please look at references, there is no harm when you are learning. Full res. available on my Patreon
sorry text is so SMALLLL but click for bigger image ye :u
[ the first thing you gotta keep in mind is chubby arms are wider and softer than skinny arms.
[ they’re like muscular arms, except much softer! imagine a tube; depending on the body build of that character, that tube will become bigger/smaller depending on the body type. ]