the log textures are very small and blurry; recomend you use higher res maps game model quality or not. also you may want to use more polys, especialy the two brace planks on the bridge. A note on realisim, the bridge would likely have some way of gripping (spikes on end) to the wall to make the tower more dificult to knock over. Overall texturing is strong, modeling is, in my mind not so great. of course it depends on what the portfolio is for.