I have to agree with all the others. You still got a long way before your map can carry it's own weight.
We'll make a quick list you could try:
New heroes/spells
It's boring to see the standard WC3 heroes with their standard spells. I play custom games mainly to see some awesome spells. I like the idea about the races, so try keep human heroes for the humans and so on.
Shadow Fix
You have some problems with the shadows around the middel. Use the, can't remember the name sorry, shadow and save thingy and it should work.
Terrain in general
It's flat with a hole and some bridges. Come on man, give it a little push. Try to make some trees around the field or hills or water. Just let the fantasy loose matey!
Buildings
Try to make some more interresting cities. A standard castle followed up by a wall of arcane towers are extremly dull to look at.
Creeps
Try making some nice creeping areas that fits your terrain. Spiders in the deep forest, Centaurs at the desert and harpies around your mountains.
That is my primary tips. Good luck matey
-Sinizi
ps. Don't ever make Tome of Power at the beginning.
pss. Sorry for any typos
