First time trying competitive play

Question

SO this is a work in progress team that I'm trying to build for competitive OU Ladder matches. I feel like ive pretty much picked up on the basics of teambuilding but I'm still a long way off from being good at competitive battling so id like any advice on my team( ive made a lot of adjustments so far).
Reaper (Scizor) (M) @ Life Orb
Ability: Technician
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Bullet Punch
- Bug Bite
- Swords Dance
- Superpower

Garchamp (Garchomp) (M) @ Rocky Helmet
Ability: Rough Skin
EVs: 240 HP / 176 Def / 92 Spe
Impish Nature
- Earthquake
- Dragon Tail
- Stealth Rock
- Stone Edge

Cinder (Charizard-Mega-Y) (F) @ Charizardite Y
Ability: Drought
EVs: 40 HP / 252 SpA / 216 Spe
Modest Nature
IVs: 0 Atk
- Solar Beam
- Fire Blast
- Focus Blast
- Roost

Drillface (Excadrill) (M) @ Choice Scarf
Ability: Mold Breaker
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Earthquake
- Iron Head
- Rapid Spin
- Rock Slide

Lady Angel (Latias) @ Life Orb
Ability: Levitate
EVs: 72 HP / 184 SpA / 252 Spe
IVs: 0 Atk
- Draco Meteor
- Thunderbolt
- Healing Wish
- Psyshock

Glowstick (Umbreon) (M) @ Leftovers
Ability: Synchronize
Shiny: Yes
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Foul Play
- Wish
- Heal Bell
- Toxic

Thanks for taking the time! If there is any questions pertaining to my build please ask away.

Comments

Singles or doubles?

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Singles. I'm may remove stealth rock as well b/c of choice scarf

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Also, since your Garchomp isn't using special attacks, give it a jolly nature so that its special defense is slightly higher.

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Good point, you have any suggestions for the 4th move? If I do jolly I probably shouldn't use fire blast then.

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Iron head gives you full weakness coverage. Or, you can replace the scarf with life orb and teach it swords dance.

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Instead of reflect have espeon know dazzling gleam, umbreons are not really used for attacking, more often than not they are used for stalling, so give it toxic, moonlight, protect, and foulplay/baton pass with 252 HP 4 Def and 252 SpD

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I get the Espeon fairy type move helps balance my team move coverage but if I turn Umbreon into a toxistaller that basically eliminates my team "medic." Any suggestions on how I could adjust with that?

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Suggestions this small are usually posted as comments, not answers.

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Switched it to iron head and Jolly thanks again for pointing that out

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Add rapid spin on someone. You don't want your charizard to start with only half health just because opponent used stealth rocks.

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I did I put an excadrill as well as Latias and a few other changes(lucario and espeon are gone) Once I ran a match and saw that happened I made a few changes.  I'll have to wait til I I can get to my computer to reflect the changes I made I think that the new team will be much better now that I've run a few matches in ou.