Turning digital?

Hello to anyone who has stumbled upon this post of mine!

Recently I got very interested in digital art, mostly because a job opportunity has made itself known. However, when I started learning about it, practicing drawing (sadly only with my mouse and not a drawing tablet) I started to really get into it. So, I started looking for sketches of people on the Internet and found some.

The drawing attached is just my digitalized version of the original sketch found randomly online. Unfortunately, I couldn't pinpoint the original artist of the sketch so if the picture below resembles the sketch of something that you or your friend drew, contact me and I will give you credit for the original artwork.

Keep in mind that this is my first ever digital drawing done only with mouse on my computer!