Q: How do you make your chords so interesting? You got like 6 and slash and suspended and add9s. How do you make them sound so good?
A: first, pay no attention to how good you think they look in a chord symbol, as you said, you wanna know about how they sound. now that i got that out of the way, it's pretty simple, here's how you do it: spend your life living and discovering songs, and finding the ones that you love the most, the ones that seem to improve your life, ... etc. Also, spend a lot of time just raw at the instrument (chordal instrument) trying to use the instrument to improve your life. i just realized what i'm trying to explain is exactly the same thing as learning a language. hear other people communicate things to you, try to communicate things to other people, and just keep doing that and after a couple of years you will be pretty good, after about 7 years you will be great, and after about 14 years you'll be... really great. and so on.