When drawing a foreshortened arm, i would make sure that the two parts of it seem like they connect at the middle joint, visualizing the arm unfolded or the character in another angle (with no foreshortening) would maybe help to maintain believability in your piece. The top fingers looked really good, except for the pinkie, who just looked a little bit rushed. The palm looked totally fine, the shoulder could maybe have been lifted up a little because of the position of the arm. For the skin texture, since there is no color or rendering and there is no need for complex shading or texture, you could add some stretch on the side of the pinkie for slightly more believability. The thumb's size was a little too big (maybe if you looked at your real-time hand for reference), and maybe you could put some sharper angles so it looks less off-stretched. Overall, the pose is really nice and I think what could really help you is building up your 3d space awareness for more believability. Good luck with your journey! | Artwod Feedback