Drawing excercises

I've set my sights on some new goals as an artist and what I'd like to achieve will require me to up my game. I've really worked at a lot of things over the years but drawing and other art "fundamentals" if you will, have slipped, so I'm making yet another effort to improve my drawing skills.
This is a very simple and unexciting exercise, I remember doing in on in my first high school art class, possibly in middle school as well. I remember being satisfied with my efforts in high school but it's been a long time. In middle school I used one pencil (usually a .5 mechanical pencil) to achieve the full range of values. I was introduced to the idea of using a range of pencils (hard to soft) to achieve the same effect, I became more aware of the range of papers available and how not to abuse them as I drew.
What I'm taking a long time to say is that I'm still getting used to the idea and process of using a whole range of drawing pencils to create my range of values. I should be much better at this by now but I've never put the work in. Hopefully I can do that and stick with it this time.
Here's my first attempt.

I'll do better on the next one.