Don't you guys just hate it when you find a project online and it seems all promising and cool and then the "artist" just doesn't update and nothing happens for years and years? Yeah, me too 
I miss the Birgirpall videos on youtube too! Anyway, with Photoshop on the iPad, I brought up my Survey Island map and realised that the outline of the island is all wrong! Damn, I must have copied an earlier render from the Riven poster incorrectly.
So I had to correct that which means I had to go back a bit, but at least I've started to block out the interior somewhat.
Now, what to do to motivate me to keep working? I have no idea!