For this one, I did a lot of the same things as the rest of my builds, though I started off in a different direction since I couldn't find any proper patterns online anywhere (lack of time meant pep files, but there weren't any out there yet for this one). So, using a standard Warlock helmet file, I opted to attempt to modify it on my own, freehanding the front half.
By this time though, someone had finally made a proper pep file, and I was short on time so I adapted it to foam and started again.
Already things were looking much better. I was kind of disappointed that my attempts at making the patterns/freehanding had failed, but glad that the redo worked.