I am not the best designer, but I feel I am able to distinguish good design from bad. I like to keep up with the design trends of the web and be active in the community.
One way is to build out design is by wireframing through frameworks as a base layer and add on your custom design on top.
Designers learn, grow, and evolve together as a community just as programmers do through code. You can follow great designers through their work that you enjoy for inspiration.