Good stuff! Dying right as an engie is important. For example, at supply if you can die right at the gate rather than in the bottom of the building or inside the depot gate right before, please do so. Don't make the medic and yourself get crossfired from every direction.
Being aware of the teammates behind you is huge too. If you can avoid strafe dancing infront of people please do so, move wide and let others help you rather than get bled by your teammates and the enemy. Spreading also creates a wide cone making it more difficult for a single enemy to killing multiple players.