Re Togekiss: If you want to post it, then I won't stop you. Go for it. If you do want my opinion on the set, though, I don't think it's viable. Togekiss has much better special coverage, and Serene Grace to abuse as well. The Scarf + Trick set and Nasty Plot set are both a lot better.
Re sibling: Yep, all good. Thanks for letting us know. Some advice for new competitive players:
* Your ideas and battle skills will suck at first. You need some practice and to do some reading to catch up.
* Reading Smogon analyses will help you get caught on terminology and understand what roles each Pokemon typically plays. Lurking Smogon forums in general is not a bad idea. You will find useful resources like this:
https://www.smogon.com/forums/threads/3667732/
* Teambuilding is about having Pokemon that enable each other to beat all the threats in the metagame you're playing. There are multiple correct answers for how you might approach that.
* Think long-term when you're battling. What Pokemon to you need to win the game, and what do you need to do to win? (For example, which Pokemon need to go down before you can set up a sweep? Which Pokemon must you hold onto to counter your opponent's setups?)
Re OU team: Here's what stands out to me at first glance:
* Dragapult + Urshifu is a very solid offensive core. The main gap in its coverage is Fairy-types like Clefable and Togekiss; the latter in particular must go down before you can win the game. Consider using a different pivot like NP Rotom-H so apply more pressure to those Pokemon (plus Pokemon like Mandibuzz).
* I don't think Ferrothorn is super valuable here. Its best matchups are similar to Corviknight's. Spikes is the main draw, which is less important if you can run rocks on a different Pokemon (or use Toxic Spikes on Toxapex instead of Toxic). Go for something like Hippowdon that is sturdier against Urshifu, or Rotom-H per the above. Use Def instead of SpD on Clefable if you use Rotom-H.
* You need a way to stop Volcarona. Use Thunder Wave on Clefable. (Note that Psychic is a staple on Volcarona for high-rated players, so Toxapex is not a counter.) Aromatherapy isn't needed on a team with so many status immunities.
* Use Soft-Boiled over Wish when you have a team with so many self-sufficient Pokemon.
* Use Pressure instead of Mirror Armour because it helps break the balance stalemate.
* Run SpA instead of HP on Dragapult. You don't need to pivot as much with Dragapult when you're playing a slow balance team like this. In fact, Specs might be a better set here seeing as you're short on wallbreaking power.
* Urshifu is a more solid win condition if you use Sucker Punch on it. I like Substitute, but it can be foregone. Consider Black Glasses over Leftovers to ensure OHKOs more easily.
