shoulders look "thin" when in a position other than the t-pose

[caio5DA0]

I've created a character in Fuse, riggeed with Mixamo, and imported to Cinema 4D.

My problem is: when I move the arms to another position, they and their shoulders look "thinner".

Any suggestion?

[Ussnorway]

it looks thin because C4D is reading the weight map wrong... in fact its not reading it at all and is just giving a standard "one size fits all" map which is a common mistake that Blender also makes

what to do about it = fit it in C4d {assuming that old software can even make weight maps} or use something more up to date like Iclone

[caio5DA0]

Also, I think the arms are a little short.

[Ussnorway]

if you make the neck shorter then the arms will look longer