Looks great! David's pencils are pretty tight. If you want to challenge yourself, try to find some looser inks where the penciller has left more decisions up to the inker. Gene Colan in particular is a good person to work over for that. You can find plenty of his pencils online. I know this may sound a bit counterintuitive, but also try inking over finished inks of your favorite inkers. It's a great way to absorb the mark making. Even if you're working digitally, you'll figure out what brush sets you need to achieve certain effects. Someone suggested this to me years ago, and it took me a long time to get around to trying it, but honestly, I learned way more doing that exercise than I did inking over pencils alone. Again, great job on Etrigan.