I'm afraid there's no "magic tip" to doing good faces and expressions. (Or any art, for that matter). The only thing that really yeilds results is lots & lots of practice, along with lots of screw-ups and dissappointments along the way.

At least, that's how I learned. And I still am always trying to find ways to improve my work.

Something that might help though is to check out some of the various art tutorials, either online or in books. I don't think any of them will make you a full-blown artist overnight,(they didn't for me), but they can point you in the right direction, and then with practice, you'll discover what techniques work for you, and which don't.

You can also look at other artist's work, and really try to break down what they're doing. Notice how they draw the face, the angles and curves, their linework. Then use that as a loose base for your own work. Start off rough-blocking the the figures to get the proportions and poses right, then add detail. Don't be upset if/when your art doesn't turn out as good as theirs; Again, it's a long process.

See, this is what I've been trying to do, but I'm not a very good book-learner. I only really learn by first hand example, so what I've been looking for is basically someone to OC with. My main problems are seeing how to work an open-mouthed expression, while expanding the jawline, but every time I do it, it comes out funky.

Do you have any good resources for expressions? I've searched DA and FA, and I haven't found much that is helpful....