The difference between this guy and the next is the percentage of fat. You want to eat a lean diet yet eat what you need, especially protein for muscle mass, and do cardio to get your fat percentage down to minimal fat so you can see the muscles. Also, eating more meals throughout the day rather than one or two big meals is better, as it trains your body to not store the fat.

heavy weights and lower your fat percentage when you feel you’re big enough

low weight reps. not to low wher you cant feel it but just so you can feel a burn