I have downloaded the map and see that it's quite impressive!
Couple of things, though. Only small tweaks, nothing to worry about;
1. You should add the Van lake on Anatolia; it's even bigger than the Tuz (Salt) Lake. It's located to the east.
2. Upper parts of the Caspian sea should have marshes.
3. You might want to change the looks of Cyprus a little. Add two more squares to the bottom and delete one to the west, maybe?
4. The Balkans should be full of trees. It should be very, VERY lush.
5. Sinop (the northern tip of Anatolia) should be a little "more" to the north. I mean, an extra tile or two would make it perfect.
6. The black sea coasts should be very very lush. Grasslands instead of plains. Even forests all over! Trebizond (Trabzon) should be covered in marshes.
7. The eastern parts of Anatolia should have "ice capped mountains". Just to give the effects

8. You can delete the eastern tile of the Tuz Lake to make it more realistic.
9. The southern parts of Iraq should have more deserts with floodplains. Same applies for the south of Egypt a little bit (like 2 more squares of desert?)
10. You forgot couple of ocean tiles here and there on the mediterranean. Also, some coast tiles are visible on the top left corner of the map.
I like the way you added Corfu in
Since the map is done, I think we should start plotting out the tech tree first, as aaminion00 has suggested. Then we can discuss the units and add them to places necessary.
Oh, by the way, I love Xen's idea for the Venetian unit.