Draw buildings with 2d iso Diamond

[brainydexter]

I have a 2d isometric tiles(64 by 32) system drawn in diamond manner. It took me some time to understand the basics of this and draw the same. I want to now, place buildings on this isometric world. I have been searching a lot of places, but I get boggled down. Can any1 please suggest me as to how to approach this. I want to keep things simple as of now.

I would like to know as to what kind of art would i need..dimensions or any other info would help!

Also how to go about the whole thing of plotting buildings.

This might not be the best place to ask but I think there are a lot of people with experience who can guide me in the right direction.

Thanks  

[Lord Delvin]

you need to draw them top down(that means higher y first in most cases).
I think in most cases the size of the buildings image wont matter, but your artist should know your 64x32 ratio, as this will make a difference for him.