There is only one thing I see that is incorrect canonically about this piece: All Imperial power armor for the Adeptus Astartes (modern armor is the Mk. VII Aquila pattern) has the Holy Imperial Aquila embossed on the breastplate in the chapter's colors. Otherwise, stellar work, and I hope to see much, much more from you.
This came out extra slick although my only nit pick, the depth of field is weird with that one servitor so close yet just kind of blurred. I think if you blurred out a lot more of those shapes and had more of a vague sillhouette you'd be doin good, camera would be focusing waaaay past that guy if he was that close so you'd have little to no clarity. I think. haha. good show!
As a fellow SM lover and GW fanatic, I will simply say that I think the next time you do Space Marines, you should be careful not to diminish the armor too much. You've done fantastic here! My only concern is the shoulder pauldrons look just a little too "shallow" if you take my meaning? They should be just a little bit bigger, is my take on it, in comparison to other artwork that I have seen. Not that all SMs are uniform, and indeed people may think that this opinion of mine is wrong and that you nailed it (which, I think you did quite well), but yeah, that is just my two cents worth.
very nice!!! this is a great pice but the only thing that is a bit disturbing is the miss of the imperial eagle or a big ultramarinessign on their chests! with those signs you could improve this piece even more!!but it's only and advice and if it was on purpose to miss those signs then ignore this^^ but anyway great great pic !!! really