Horus heresy duo event warhammer fest. Sons of horus list.

Hey guys! Me and my friend are in over our head’s . We have signed up for the Warhammer fest Horus heresy duo event when we’ve played the game only 4 times….

I’ve painted, collected and listened to the lore since 2017 so I do have a large collection. But I don’t know anything about army building and especially for an event. I assume people bring their A-game at these events, so anyone got any tips for a noob building a sons of Horus and World Eater list?

Sorry for the crappy grammar English is my 2nd language.

Hope to see you guys there!