I enjoyed the first one by the way, when it came out and more recently again on my phone.
The logo looks great.
Some aspects of the items could be improved a bit. Most noticeably, the hat looks very flat. I don't think the lighting is correct, and there isn't enough contrast. I think the dark outline is also hindering it as it looks like a shadow around the whole thing. The dithering could possibly be tones down a bit.
The cloak looks nice in places, but the form as a whole seems to get lost. For example, I can see the shape of each arm, with the light source being up and left, but in the piece as a whole the torso does not cause any shadow on the right arm, and seems to have a more frontal light source. This gives the effect that the arms are too far forward. There are also some rough edges and banding in places, and also some colors that are far too similar that could probably just be one color, such as the two darkest colors.
The jacket has some similar issues. Too many colors, and a bland frontal light source.
As well as fixing these technical issues, it might be worth trying a different perspective on items such as the cloak and jacket.
All the best.