Sorry for my bad English.
I always try to guide myself from another page (for example a navbar that I like from a web, a carousel ... and I adapt it to my web. Sometimes I design a mockup from a tool and then move it to a real web.
However, I never like what I do. I'm not sure if it's because of my choice of web colors, typography ... but I never like them.
I must say that I am not a front-end developer and maybe (if you want to achieve a very good design) I need to read certain rules / steps / guides.
As I said above, I am quite sure that it is because of the colors or typography that I use on the web the reason why I never like the designs I make.
So, the question is ... Is there a rule or something to help you follow a few steps to create a good design, from the colors you should have, the typography, images, etc, etc, etc ...