Pay respect to the brachialis, the forgotten muscle. Train your brachialis first. Make this overlooked muscle found between the biceps and triceps a priority.
Training your brachialis is a great way to help "project" a massive arm because as the brachialis develops, it actually pushes your biceps and triceps further away from one another, making for a wider-appearing arm. There are a number of different exercises you can use to hit your brachialis:
Start your workouts with one of the above, preferably one of the first two listed. Here's what the cross-body hammer curl looks like:
Bonus tip: Grip the dumbbell as hard as you can throughout the rep for even better results.