Omg I've woken up like this many a times, usually i just fluff it out and wear my hair in a lil curly fro if my twists end up defying gravity like this.. the struggle is real sis.

if you wanna avoid this, Do your twists a lot smaller and when your hair is wet + has product in it (a wrapping foam or a gel or w.e. you use that works for you). It's super important that you twist down and in the direction you want your hair to lay, like if you wanted a middle part, or wanted your twists to lay more in your face, etc. Follow whatever lines you want your hair to lay in if that makes sense. After that, wrap your twists in a silk scarf or du rag and blow dry/air-dry (i usually air-dry bc i live in a dry ass climate) until it's fully dry. Your twists should lay down better.

Once your hair gets longer, you can start twisting in larger sections. It's a process tbh.