I've either stopped being able to or else have finally realized that I never could make ascender loops gracefully. I've been working on those the last few weeks.
Also, squaring off the tops! I can fake it well enough by touching up the bottoms, but somehow I can never make the tops graceful.
Also, I need a lighter hand, because my shades are too thick, and I'm always impressed at how graceful other people's writing with thinner shades looks. I've even switched to a stiffer nib because no matter how hard I try to lighten up with a super-flexy one, I end up thickening.
(My ovals are pretty good, at least!)