Hi @Patrycja, nice drawings! Good job using clean confident and simple lines. The proportions and sense of form is also pretty good 👍 - Try to look more for the difference between lines. Nature often provide us with a rich variety, which we tend to "straighten up" and make more regular. If we look at the legs in your drawing for example, they all look very similar, a bit like the same leg has been copy pasted, but in the photo there is a richer variety. Angles vary more, and so does lenghts, widths etc. Getting variety is not easy, but you'll get better at this with practice, but I just wanted to point it out; keep an extra eye out for variety and try to get it in your drawings. I might even dare say: get as much variety as possible. A fun challange in a line exercise like this, could be to have as a goal to never repeat a line; that all lines should have a different lenght for example. That could encourage you to start looking even more for variation. - The skeleton has some interesting details. Since Stan suggested simplification, maybe there are ways that we could make your drawing simpler. The teeth for example, could they be grouped into longer, simpler lines? Or could at least each tooth be drawn with simpler lines? What bumps can you smooth over without loosing the character of the subject? I hope this helps :) PS: Next time, please post your assingment under the assignments tab in the lesson that you're submitting for 😎👍 (for this assingment https://www.proko.com/course-lesson/project-simplify-to-csi/assignments )