I totally agree that this is an amazing piece! One thing I've noticed about your drawings is that you tend to keep them really dark... I think if you lightened them up a bit more then they would be easier to see but this one is more of a silhouette so I totally understand that I love the pose and the expression!!!
In other words, it's the resolution on your computer that's the problem. If I were to brighten this to make it look any clearer for desktops and low res laptops, Nirvana would actually have to be made grey.. which is not correct.