Is there a way to fix thin/flimsy looking twists??

[Whimsy]

I did some twists and the final product is super thin/flimsy. They're still slightly damp and I'm hoping maybe they'll get plumper or something as they dry.....?

Is there a way to fix this or will I just have to pin my hair up this week before I do a twistout?

Any techniques? Products?