I'm not an ADMIN., But I am a Mapper since Delta force started.
Currently I map for DFLW. Perhaps I'll move forward at some point.
No claim to fame, Just willing to help [if I can].
I haven't worked with BHD game/maps. But, Mapping, in general, is very much similar.
First read what Novahq's requirements are.
Be patient, as Novahq's receives alot of maps.
Build your maps, then check and re-check them.
Ultimately, your maps are "indicative" of your skills and observance in gamming.
Read "in-game" comments" which other players are typing on the game screen.
It might be helpful to look at maps that have multiple [100 to 300] downlads on Novahq's.
Don't "re-do" another's maps, but, see how it plays for "YOU".
Many Mappers have come up through the ranks this way and their own distinctive way.
Their has to be some trial and error before an individuals maps catch on to any community of players.

Hope this helps to get the "Mapper-Juices" flowing. Best of Luck!

Regards;
Carpe Diem