This was a college project in which I had to create something using the Pen tool, which is what I did. It was my first time with the tool and I'm quite happy with the result.

 

It didn't save very well so there's some black between the white and grey parts, but it wasn't like that in Adobe Illustrator while I was working on it. I saved it as a PDF and converted it to a PNG later on to have a very high quality image (Use pdf2png).