Hey your basicly a starter at romhacking, right ?
well keep on trying, and maybe ask one of the better mappers like me or neti, Disturbed ect..
on how to improve your maps.
trust me you will get better in a few weeks if you keep on mapping.
then if your lucky, you could map for me or one of the better hacks.
good luck on it !
p.s - please accept my friend request.