I like how you captured the line weight as it organizes the different sections of the creature. It's also cool to see how the artist used line weight to emphasize shadow regions, especially under the crevices of the arm and legs as they bend-- definitely worth noting. If you continue to practice line studies, I would recommend searching for something with a clear use of lines. Sometimes, a piece can get too painterly and rendered that the lines are harder to study from for this project. Take a look at the lesson notes, there are some fantastic suggestions for artists if you are looking for inspiration :)

The proportions are pretty good. Well done