There are various elements of design to consider when styling an outfit!
Proportion + balance are key. You can play with colour and patterns within this element, but perhaps one of the most important things to note is the rule of thirds. You want either one-third on top and two-thirds on bottom (as in a shirt and pants) or two-thirds on top and one-third on bottom (as in a dress). Never divide yourself in half!
My outfit is a great example of this rule. I’m wearing one-third on top and two-thirds on bottoms. In doing this, I’m lengthening my legs with high-waisted, wide legged, jeans and balancing it with a cropped top and jacket. This fitted look on top also helped balance the volume of these latest denim tend, making a more polished and overall refined look.