the texture itsolf now looks definitely very nice, at leas for me. but also, from these better viewpoints, it is more visible that the vertical scales are somewhat not okey. and both the first and last wheels could be a tiny bit smaller, no way more than 5%
little whining: dunno that during the late 30s and very-early 40s wouldnt the tank crew would 've been sent into gulag for that inscription x/, even za rodiny and the personal names will only appear later in the war, za sssr or za lenina would be okey but with za stalina will they could certainly make safe their lifes xd of course u may not want to have anything liek this on ur creation its all ok (myself never had problems with such realism in historical logos/insignia etc, but most ppl has. well they wont be able to read it in this case xD)
yeah now as i stare the pics searching wahts actually to be changed (only generally could feel its not right), isnt the fender a bit too low compared to the photos and thats why? and if the forward third would more visibly (but not much) slope downwards that would boost it too.
im not sure but if i remember correctly there were some bt tanks with that shape at the nose as is yours now, but both photos have a definitely different one. (edit, no, the bw photo has this, my mistake) on the plastic model kit, and your blender screen in yyour first post, its more visible. if you want to change to their style, also note the following: the vertical-ish face is somewhat less taller, and more inwards-sloping. the bigger face most front(*) is also somewhat less vertical/even more close to horizontal, but not much, this is more visible on the bw photo.
*:the big paralelogram, which is almost a triangle but its most forward vertex cut down; and which is making up the whole upper forward face of the body in your design and from which’s center the box with the ‘vertical-ish’ face is emerging from in your design. lol would be half second to point with finger and lines to describe 
ah yeah, yet another thing. the track-leading “spikes” if 'd been added itd be also make it looking less “clean”