In art there's a lot of different ways to approach the canvas.
The following isn't really what you are going for with this piece, but you asked for ways to practice.
Try drawing what something feels like, not what it looks like.
This sketch is not at all visually accurate to the reference.
However it is much more closely related to the feeling of the reference.
It's subtle, but Dante is giving off a cocky "What you gonna do bro?" type of vibe.
Your image reads more like this.
"All is well".
This is due to the lack of an emotion displaying face.
And that you have straightened the lean of the body and tilt of the head.
Also note that we can change the feeling the character is giving off just by changing the face and leaving the rest the same.
As you make art decide how you want to balance drawing from feelings and drawing from vision.
Logged
And knowing that it is, we seek what it is... ~ Aristotle, Posterior Analytics, Chapter 1