What are some good style option choices for Dall-e 2?

Rather than using the generic term “drawing” you’ll generally get somewhat better results with the more technical “graphite drawing.”

As a general modifier the term “fine art” usually goes a long way towards improving results.

Edit: Also interesting is adding the term “chiaroscuro.”

The general advice is to use more technical terms from the field of art. As these will generally be tags associated with higher-quality artistic works.

Edit 2: here’s a couple of good resources to help you get started on this path.