Sorry for the crumpled state of the paper and how it doesn't look like it makes sense.... but when I sewed mine together, it definitely worked.
Since I sewed mine up quickly, I forewent the full complicated details of Loki's coat, in particular the V-shape part in the back, but I'm sure it could be easily added in. I only made half of the coat as a pattern because the other half would be identical and I could just flip the patterns. All the extra pieces on Loki's coat actually makes it quite form fitting to Hiddles's back, but it's quite hard to actually get that done right. (i am kind of a beginner sewer though -.-)
The arm sleeve top area and the V-shaped bottom area might not look like they would sew up properly but they do. (in reference to the last picture of the patterns I made) I'm not entirely sure how to explain it but I think it works like this. The top sleeve part will be pulled up and sewed together with the other top sleeve opening part and that will pull up the bottom part of the same piece and that's why the angle of the V shape thing changes to match the beginning part of the V-shape thing... The change in angle happens to be where the midline of the jacket is as in the middle of the side seems.
Personally, I'd like to go back and make a better more accurate simpler pattern, but I don't think that will be happening anytime soon because I'm not hung up enough on it to re-sew it... plus I don't have anymore of the green cloth. I think it would be easiest for someone to modify a pattern based off of this one if they wanted to. I hope this helps. My ask box is always open if I can help