Overall very nice. Might want to study anatomy relative to art so that you have some sense you're working toward as opposed to mirroring another's picture. A lot of this vintage painting is generally soft. But the painters understood anatomy so they could imply structure in a seemingly general way and get away with it.
What you can then do is step up your lighting with a bit more purpose. I mean she's an old lady who by nature is soft and sweet and old -- where you could not leave her house without a bunch of cookies tied in a hankie. That mood is valuable to hold. And soft, lesser contrast might be appropriate. However, when narrowing one's value range, subtleties tend to stand out as big jumps, as in the hand.
Right now it's a little plainer than it might be. Not extending the values and saturation combined with small strokes makes it feel a little tentative, like you're not quite sure about what you're painting. . . like being a little trepidatious about screwing it up. When doing figures it's a lot different than a building where you have a lot of wiggle room.
You would probably want to extend your value range a wee bit for starters.
But as to a good painting, this is. Still has some minor structure issues. But that all will come with understanding anatomy and form and lighting a wee bit more.