Something that I talk a lot about in this column is color coordination—things going together, things not going together, things that technically are fine but could be better, whatever the hell this was. It’s one of the most difficult aspects of mastering fashion, especially because a lot of it is very intuitive, which can leave a lot of people confused.
For anyone who’s unfamiliar with the terminology I use in this column (warm vs cool colors, saturated vs muted, what makes two colors contrasting vs analogous/coordinating), this primer of graphic design tips lays out a bunch of the concepts really nicely.