Trying to make my first custom

Decided to use Barbatos as a base, but I'm basically just testing ideas that popped out at me and came up w this amalgamation.. Can't decide on a name tho, so far I've thought of Gundam Furfur, Gundam Andrea(Andrealphus), Gundam Naberius, or Gundam Sabno(Sabnock)

But anw.. If yall have any advice for somebody's first custom I'd gladly appreciate ir