Hey W.I.M.U, This is a pretty good drawing, and the likeness is almost there. I think what helped you is that you chose great reference. Everyone should use reference like this, simple, one light source. What I did was show you in a quick sketch what I see in your drawing compared to the reference. As you see, the problem you are having is that your angles are different from the angles in the reference. These angles are super important, they help us line things up and make them more accurate. Comparing angles and distances between elements in our drawing is crucial to getting things right. As you see in the little sketch I did, I always draw with straight lines, it's way easier to be accurate. I hope this helps you in your future drawings :)