I completed a set of chrome studies in an effort to better understand the material. I created all the studies in Procreate, using a grid to speed up the initial sketch. The cityscape in a chrome ball was the most challenging of the set, and I would take breaks from it in order to keep myself engaged in the deliberate practice.
You can see the original study reference photo in the top left. The image was on an online store selling massive stainless steel spheres --> https://www.okchem.com/product/al_High-polished-1000-mm-stainless-steel_60806512417_8804854.html