18 Aug DL 1500 WGC Narrative Prep

I'm trying to get some practice with my WGC narrative list. My team is going to be playing against orks, so I would ideally like to play against an ork player. I've had a terrible track record playing against orks, and while my list is set for the event, I would really like to get some constructive criticism to help me play it better. Baring no orks, any other xenos or chaos faction would work. Our team gets bonuses for games played leading up to the event, so as long as I'm not playing against another Imperial force, I think I'll be able to get credit for it.

The format is 1500 pts, battle-forged, no LoW. I'll be playing my Ultramarines including some FW.

Bump. I know it's a paint night.