From the eight stories, I can relate to two separate ones: Goyen's “Sculpting” and Vidal's “Painting”.
When I write, I like to try to write the entirety of the article as if I only had one shot at writing it, and as soon as my final word was typed it would be turned in and graded. Once I'm finished, I go back and refine details as they stick out to me. Eventually, I will be satisfied with the work as a whole and go to the finest part of editing, which is grammar and spelling in my opinion. Going with that though, if I come across parts that need to be taken out completely (bigger parts like full paragraphs), then I work with the painting metaphor. I go back, put in different layers to accent pieces that are already in the first draft. I flow between the two: major writing to finer details, and layering on new material as necessary.
In Wikipedia, the discussions and other edits help make the article more like a group drawing project. One person makes all the touches he needs and puts it up for criticism and revision. Another person can come in and suggest new things for the first artist to revise and think about. At the same time, a third person can come in with an eraser and take things out on his own, then scribble in his own thoughts. Discussion is better for showing us what can work and what might need worked on, along with helping new editors know what kinds of things need to be in an article to be able to stay up. Viewing History is more like Monitoring from our last article. We can look to see what others think about it and watch how our article turns from one drawing with graphite to a masterpiece flowing with vibrant color.
For composing, it's the simple act of learning what's necessary (in the case of Wikipedia) to be acceptable. Moderators and spy bots from that site have their own set of rules for what's allowed on Wikipedia and what's not. Other editors on talk pages or straight editing help us realize what's necessary.