I just started the class this year as well too. I think this is a great first attempt. I think the proportions of the pear look a little off compared to the reference photo. The top of the pear is narrower than the bottom. As for the values, I'd say some of your values are a little too close together. It almost looks like you only have 3 values here instead of 5. I'd darken up your cast shadow, making it almost solid black. That will make it a lot easier to play with your other 4 values. The front plane of the pear around your highlights should be lighter than the shading on the side of the pear. They look a little too similar and because your highlights are really small, they're hard to see. But other than that, you did a really good job simplifying your shapes and keeping your edges straight. That's a challenge in and of itself.