Uploading a Wearable

Could someone help me?
I am uploading a Wearable, but it’s distorting the wearable. What am I doing wrong? How can I fix this?
The first image is from Blender and the second is when I upload on Decentraland.


Thanks in advance for your help

Looks to me like the weights on the model are wrong. Check this tutorial

greetings
bunny