Rate my team!

[LonelyPenguin]

Serperior@Light Clay
Ability: Overgrow
EVs: 252 HP/240 Spd/16 SpAtk
Nature: Timid
-Reflect
-Light Screen
-Leech Seed
-Giga Drain

My lead, usually a reflect or light screen first, then leech seed, then the other wall, giga drain when needed...pretty simple. I chose Serperior because it is a very fast dual-screener, which I wanted for a very buff sweeping team.

Volcarona@Life Orb
Ability: Flame Body
EVs: 252 SpAtk/252 Spd/4 SpDef
Nature: Timid
-Quiver Dance
-Fire Blast
-Bug Buzz
-Hidden Power (Rock)

This little guy is what I was building my team around. I love this pokemon. Very fast, HUGE base special attack, and having quiver dance + reflect and light screen is so crazy. HP Rock for coverage. I will try to keep him alive as long as possible.

Starmie@Shell Bell
Ability: Natural Cure
EVs: 252 HP/216 Spd/40 SpDef
Nature: Timid
-Rapid Spin
-Recover
-Scald
-Thunderbolt

Starmie is my special defense semi-wall spinner. I like having a slightly beefy Starmie, so Shell Bell + some SpDef EVs + Recover. It also has Scald for potential burns. Thunderbolt for coverage. I'll send out Starmie if I need to Rapid Spin or semi-stall. Took this guy as my 2nd choice for rapid spinning away those stealth rocks.

Skarmory@Shed Shell
Ability: Sturdy
EVs: 252 HP/236 Def/20 Spd
Nature: Impish
-Spikes
-Whirlwind
-Roost
-Brave Bird

My physical wall. Pretty self-explanatory. I chose Skarm for a steel type with the fighting-type coverage in Brave Bird and pseudo-haze. He was my 6th slot, but it should work well enough.

Haxorus@Leftovers
Ability: Mold Breaker
EVs: 252 HP/156 Def/100 Atk
Nature: Adamant
-Outrage
-Earthquake
-Dragon Dance
-Taunt

This guy does everything. He can sweep like mad. He has some bulk with reflect+light screen+def EVs. And he can taunt. Oh boy. Mold breaker and EQ is necessary imo, leftovers works the best on him than my others I think.

Weavile@Choice Band
Ability: Pressure
EVs: 252 Atk/216 Spd/40 HP
Nature: Jolly
-Pursuit
-Ice Shard
-Brick Break
-Night Slash

My 5th pick. I took Weavile mostly for pursuit/revenge killing. Very fast, very strong. I also needed a fighting type move, and the ice type move doesn't hurt, so I settled on this guy. Choice band is a pretty obvious choice.

I like my team because they can all do some sick sweeping, yet with reflect, light screen, and leech seed from my Serperior they are all still pretty beefy. Besides that though, I feel as though there isn't much synergy between my pokemon, and that there are some holes/weaknesses I'd have trouble against.

What are my biggest worries with this team?

[LonelyPenguin]

bump, please any suggestions/thoughts/comments at all would be greatly appreciated, I've never battled online or competitively before and need all the help I can get.