[RATE MY TEAM] very 'tricky' to deal with

[ashketchum116]

This is a Rate my Team thread!
Its for VGC double battles, currently on battle spot my rating is hovering around the 1600's but i cant seem to get any higher and i dont know if thats because im fairly new to using a trick room team (been using it for less than a week)
This is my first ever trick room team and i really like the idea and concept behind it!

Here's my team:


Hariyama @ Sitrus berry
Brave
Guts
96HP / 96 Att / 96 def / 252 Spdef (not 100% sure if this is the exact EV spread, but its roughly around that)
Moveset:
Knock off
Close combat
Fake out
Helping hand

Mawile @ Mawilite
Brave
Intimidate
252Hp/ 252 Att / 4Def
Moveset:
Sucker Punch
Play Rough
Iron Head
Protect

Cresselia @ Mental Herb
Sassy
Levitate
252HP / 252 SpAtt /4SPdef
Moveset:
Ice Beam
Psychic
Trick Room
Calm Mind

Sylveon @ Choice Specs
Modest
Pixilate
252Hp / 252 SpAtt / 4 def
Moveset
Hyper Voice
Psyshock
giga impact
Shadow Ball

Amoonguss @ rocky helmet
Sassy
Regenerator
252 Hp / 196 def / rest in sp Def
Moveset:
Rage powder
Spore
Protect
Giga Drain

Heatran @ Life orb
Modest
Flash Fire
252HP / 252 SP att / 4 Speed
Moveset:
Heat wave
Earth power
Flash cannon
Protect


Just wondering if theres any pokemon i could bring in that would work better with my team, or any particular strategies that i could use that would help me become a better battler as im still working out how to use this team!
any help is greatly appreciated