Lately, I am concentrating on nailing overall forms and proportions first. I still catch myself diving straight into interesting details. But what is the use of a well-drawn nose when it sits too high and so does not resemble the model. For more than two hours I studied the tent and the Neanderthalian preparing his prey. Having ten minutes left on the clock, working on last details of the hide above the entrance, it struck me! I already did feel, that the structured forms and placed shadows were somehow strange for what I thought it was. And only because of an unintentional visual zoom-out, I realized: Man, this is the head of a bison!
See, even if it is your deliberate intention to follow a thought-through plan, sometimes habits are hard to break. It is practice that will help you leaving those old, wrong-proved paths.