restoration of Peace

Since young I never thought that I could draw or paint. While attending college I had to take a drawing class and this is where I discovered that I really enjoyed it. Seemingly, I realized that I had some natural talent, I'm not saying I'm Leonardo DaVinci or anything. Another discovery I made is now relaxing it is. I can fully dive into it and block the entire world out. It's been a real "peace of mind" experience. Time standstill as I delve into a sketch to the point where I don't even realize hours have passed by. Through sketching I have been able to restore my piece of mind and calm the chaos in it. Below is a sketch I worked on, what do you think? any pointers?