if there's one thing I personally focus on when I draw something, it would be the emotions. I try to convey the exact emotions of a character when I make art, and portray how they'd be feeling at that exact situation, as they say something, and so on...
I try to feel the same feelings they would when I draw an expression, as close as I can get at least, it's what I do over and over. You don't really have to do that ofc, but for me, it's a huge part of the point and it's really fun to do! It's what I believe could give my drawings more life and make them more genuine, even if it's a sketch (in fact, sometimes sketches can be more powerful on that aspect so I used to stick to drawing exclusively those for a very long time). That's how I pour my heart in, and I'm sure a lot of artists would do the same in their own ways when they create their works.
For that same reason, I really like drawing smiles (and characters that can make genuine ones) because that makes me happy. Other feelings are cool, too, but drawing happy art is so soothing, so I draw a lot of smiles!! It's also why I feel the need to understand a character, because you can't exactly feel what they'd be feeling unless you aren't so aware of what they're going through. I wouldn't be entirely right, I'm sure, but I really want to try. It's maybe why I usually stick to drawing a select few characters from a series all the time, because there are some characters I "get" better than others, and feel I can bring out better(and most of the time, luckily, those kinds of characters end up to be my favs, so I can draw then alot ;v;) Then again, I'm seeing them through my own lens of thinking, I'm just putting out what I see in those characters in the end. But it's usually the good things I love! Or something I feel is really intriguing and want to think about, or want to explore on, emphasize? Anyhow, it's the feelings and emotions part I've always been interested about! So I hope I can do that well!
My drawings aren't perfect, but they aren't too bad either, and I've been trying all the way. If they could imbue some sort of feeling for you, that's definitely what I wanted to accomplish! It makes me so excited when I get feedbacks about it being able to make someone "feel" something.. it means what I wanted got across so I'm like "yes"!!
it'd be nice if they will feel genuine one way or another!! I was and is and will be happy to continue to share my works with you all