I don't like how they ended up. Only carapace is worth watching, rest looks ugly. About Hive Fleet Behemoth I find this tutorial quite interesting: Youtube
take different goals of these tutorials into account. GW ones are provided for gamers wishing to paint their armies asap. YT clips shows how to paint a mini to much higher quality.
Yeah, that's true. Anyway I still don't like the flat body/bone areas. Today I found something that was made also for tabletop and looks much better. Nid Week - Painting: Tyranid Warrior. The bones' areas are made very quick and looks much better in my opinion. Just part of the warning. This video has about 40 minutes.