I have a friend that mains flamethrower mesh shield and a thing he does to win more fights is to burn the enemy for a short moment then pop the shield for a moment and let the flame damage tick them a but, then unshield and do it again. Combining this with general movement knowledge can be deadly. My favorite micro movement tech is to slide in one direction, and before the slide is done you 180. The moment the slide ends you can jump in the opposite direction you were going in at full running momentum
Try my preferred loadout. Charge and Slam Flamethrower Goo Grenade RPG Dome Shield Very aggressive build with high DPS output and good defensive attributes when playing Goo Grenade and Dome shield correctly.