My First OU Team

[Trainer_Ben]

Hi guys. This is my first competitive team I've made. I need some constructive critism to help me out. All comments are welcome.

My Lead ~ Rosarade w/Focus Sash
Natural Cure
Timid {252 SpA / 252 Spe / 4 HP}

Toxic Spikes / Sleep Powder / Energy Ball / Hidden Power Ice

My Physical Sweeper ~ Infernape w/Black Belt
Jolly {252 Atk / 252 Spe / 4 SpD}

Sword's Dance / Close Combat / Flare Blitz / Mach Punch

My Revenge Killer ~ Scizor w/Choice Band
Technician
Adamant {252 Atk / 248 Hp / 8 Spe}

U-Turn / Bullet Punch / Superpower / Pursuit

My Rapid Spinner ~ Starmie w/Life Orb
Natural Cure
Timid {4 Hp / 252 SpA / 252 Spe}

Surf / Ice Beam / Thunderbolt / Rapid Spinner

Wall #1 ~ Bronzong w/Lum Berry
Levitate
Sassy {252 Hp / 84 Atk / 80 Def / 92 SpD}

Stealth Rock / Gyro Ball / Payback / Earthquake

Wall #2 ~ Dusknoir w/Leftovers
Impish {252 Hp / 28 Atk /228 Def}

Will-O-Wisp / Pain Split / Earthquake / Ice Punch

 

[Opposite Day]

Just a few notes that might help you out:

First, if you are using Starmie as your spinner I'd suggest using Hydro Pump over Surf on it, since that means that Rotom-A is 2hko'd should it switch in trying to spinblock, leaving you free to spin afterwards.

If you are running Toxic Spikes you might want to use something that has trouble getting past its counters otherwise. Suicune is usually walled by Blissey and Vaporeon, for instance, but with Toxic Spikes up neither of them can stay in for long, meaning that you can easily set up without worries. Perhaps a Subsitute Calm Mind set could work out over say, Dusknoir.

If you are using Swords Dance Infernape, you might try using Stone Edge or Thunderpunch over Mach Punch, unless you really hate Scarf Tyranitar, as it allows you to hit Gyarados, Vaporeon, Tentacruel etc aka bulky waters who'll try to wall you, and that will mess up with Suicune trying to sweep. (especially tentacruel as it absorbs your t-spikes upon switching in) Using a Life Orb instead of a Black Belt also greatly increases its power, and might be worth a try.

Also, note that you don't really need to have walls on every team, for instance. In D/P/Pt OU it usually worked out better if you ran either pure offense or some sort of stall, since balance could usually not outdamage offense, nor break through stall.
Other than that, this is way better than the first team I made xD Good luck with your team!