Character Building for Landless Playthroughs

I'm looking to get my first real deep dive playthrough with the new DLC as a new original character. I've played the based game quite a bit but I've never delved into creating rulers and focused mainly on playing what was available.

So I would like some pointers and tips on how best to build a new character. I know it's going to be based on the type of campaign I'm looking for but I'm more interested in guidelines and things not to do rather than specific builds.

Thanks in advance for any help you all can provide!