Hi, tenement is square footprint now, 26x26 obstruction (the square footprint gives option of showing some kinf of courtyard in the middle)_. Still good direction though. Nearly perfect (though, I would not use shields for props).
For Flavian Amphitheater, the statues in the arches can be 2D. Look at the Civic Center. Also, the awnings should be separate, not one big roof. Lookin good. But also be mindful of the scale. Should not be a 100% replica of the building (looking at number and size of arches),or else it will not look to scale with other building and wonder.