PypeBros Thanks mate, and yeah the heights would be the only problem for the engine, rest im going to get in to.
TrevoriuS the colours in the image you gave have a much stronger contrast, im not sure if i want it to be like that.
And what kind of bases do you recommend doing, like say... Castle with wooden walls stands on the ground, then Castle with Stone walls has a ditch and stands on a little hill, and the citadel stands on a high rocky hill, is that what your saying?
dock - Nice idea about the shadow tile, i haven't thought of that before, just thinking it would be kinda hard to make the maps that way though. Im gonna try doing it.
thanks for all the advice guys, on to work again for me