Absolutely, always seek external critique. These look good! Since you’re starting out, and still getting used to the shoulder movement, I’d recommend making your arcing superimposed lines a little bigger. Smaller movements are a lot more difficult from the shoulder. In the planes exercise, you’re missing one of the center lines. Remember that each plane consists of 8 lines- 4 inner, 4 outer. I’d recommend placing start/end points for the non-diagonal center ones, by the way.