If you are really wanting to become successful, but are currently performing a polar opposite routine from the tips above (i.e. eating junk food, not having good technique) then try implementing one tip at a time until you have all of them. Take it slow, if you move to fast you'll most likely lose interest. Once you're following all the tips and rules, you'll be shocked by how fast you grow and how much stronger you become. It'll be a new you.
Identify specific muscles you hope to build. As you're posing, it's a good opportunity to check out your symmetry, your good gains, and identify places that you need to isolate or work out more vigorously for next week's training sessions. What needs to be smoothed out? What needs to be bulked up? What exercises will you need to do to get the results you want?
When lifting it is essential to focus your mind completely on the muscle group you are attempting to work on. This makes sure that you are actually using the target muscle to lift the weight rather than accessory muscles or even momentum. This skill will develop with time, and as you progress in making that mind to muscle connection, your workouts will become much more productive and efficient.