Paul’s Bods blog has a photo tutorial on making a roman town. The photos of his roman town are quite impressive also.
Ancients
Ancient and Medieval Painting Guide
Here’s a nice — if not overly deep — painting guide to ancient and medieval armies.
Free Persian Shield Decals
An Hour of Wolves and Shattered Shields has some free decals for ancient Persian shields. Just print on decal or regular paper and stick them on.
Free Ancient Greek Shield Decals
An Hour of Wolves and Shattered Shields has a set of free printable decals for Ancient Greeks. You can print these on decal paper, or on regular paper and glue them to the models.
Free Roman Shield Decals
An Hour of Wolves and Shattered Shields has a set of free Roman Shield designs for decals. Just print them out on decal paper, or on regular stock and glue them to the models. I should think that a hobby product called Modge Podge would handle that task well.