This is normally the point where I repeat something that's been said previously on the board so it sounds like I know what I'm talking about.
So here goes:
Compared to the reference image I don't think you have a very recognisable silhouette. If you look at the reference, you can see:
The two hands are visible and out on their own. You can see the whole shape of the straight leg. The arms are both in the same plane so there's no foreshortening. The hair is separated out into fronds, so looks like hair in motion. Even the snowflake necklace is recognisable.
Here's a rough example. Apologies for the rough edges.

Compare with yours.

In my opinion, the legs are difficult to read, as they overlap so much. Much of the arms are hidden by hair or overlap the body, so I'm confused about where they really are. You don't have a hand-shaped outline for the end of the visible arm, it looks a bit stump-like.
In this situation, I might try to cheat a bit. I have a poseable doll, so I might try using that to create something I think has a stronger outline:

Or there are versions of this kind of thing online, like
https://justsketch.me/
I mean, I'm not spending much time on this as it isn't my piece, but with a bit of time and effort I'm sure you could make some great looking poses. Much better than these!

Just an idea, anyway. Good luck!