The boots look great, that is an absolute keep for me. I'm so jealous - in a good way - I'm still on the look for black boots to replace my worn out pair.
As far as the purple jacket, it is a little on the big size, as far as the shoulder seam but I like it! It looks intentional, since think the overall style, I.e. boxiness and loose fit, allow for that extra room in the shoulder. It is not a 10 for me but a high 9.
As far as the trench, I think I will be in the minority since it think it is too roomy. It is a trench, so you need room, yet i think this is too much room. Is this a petite? If not, I think petite will look better. The arm length might need alteration too. Also, I don't particularly like that "bubble" I see in the back area - see pic 5 - where there is a lot of extra fabric bulging out. I think that is a sign that the back is too big. I have not read any of the other responses, so feel free to disregard my comments, if the gals have agreed that the fit is good.
As far as the color, red can be tricky so I can see your hesitation. Sadly, I don't feel this is the best color for you. Gals like us, with a pinkish skin undertone, have to be cautious with red near our faces. Perhaps you don't mind that at all. In that case, I think red is a very versatile color for outerwear.
ETA: jeje I see Angie blessed the trench... I had a feeling...
Keep and wear in good health!