Sorry for my late comment on this jaw-dropping project! I agree with previous commentators and with you! You can be very happy with the result. I like your attention to detail like the drilled holes for the main cannons. Like on your Rogue One Tank the paint looks amazing on this AT-ST. If I got
The Black Series AT-ST that cheap, I'd be tempted to customize one as well. If I remember correctly this one could be found on Clearance for as low as $9.99. The cheapest one of The Black Series that I got was 30€. Well, if I break down the SOTDS Hoth Assault Pack from 2010 the cheapest Walker was probably about $20. Good times...
I think you nailed the shade of grey used by the Galactic Empire and I also enjoy how you recreated the weight of the vehicle on the diorama base! That's the kind of stomping action I like and only know from Jurassic Park. haha And I also like how you filled or covered all holes for the screws with additional details and added this battle damage to the body's front. As
JDeck already said, this could be confused with a fine model by Bandai. And I think that's a big compliment. This is a dream project of many and as far as I remember not your fist custom Scout Walker, right? The rusty one was another impressive idea. Really well done, mate!