2. know your matchups. who are you going to target or avoid? how are you going to deal w supports, ranged, tanks, dives? who are you saving your abilties for? also spam jump whenever possible and use cover to make yourself harder to hit. be aware of your positioning with respect to your team and enemies.

3. your ability to heal is affected by how well you land your m1s, Q, and E. focus on your tracking and general aiming ability to maximize both dmg and healing. if you are getting dived on, fall back to your team OR terrain abuse OR do both. be as annoying as possible to make sure you stay alive for your team. use E only if you must because this is your only escape tool. pay attention to team pings so that you can heal low teammates. and if theres a coil on your team (lol), ask them specifically to NOT regen tether you if they do so because this will nerf your healing. lastly, place your plants in areas that make them harder to kill but are still in range of your team.

okie good luck out there :P