Very nice work. It appears, though, that the stands are way too close to the infield. The rules today state that the backstop must be no closer than 60 feet to home plate or to first or third base. In the 1890s, however, the backstop was to be a minimum of
90 feet from home base.
Your stands, in contrast, are sitting on top of the players' lines, which are fifty feet from the first and third baselines, so they're much too close, even by modern standards.