The detail of a painting, the texture or pattern, should come last rather than first. If not, the detail will determine the rest of the painting. And it’s often not what the artist wants to do. Compare this to a woman putting her scarf and jewelry on first. Or a house newly painted on the inside with no carpeting but with framed paintings and nick knacks on the wall. It’s tempting for student painters to want to rush into the detail of the painting but it can create new and unwanted problems which may or may not be solved.
Rush, rush and then what? Your advice is good, cart before the horse. Thank you ~ ? R U going to Mexico?