I don`t see any elastic at your lower bell, that will help keeping the bells in. And try to shorten the elastic at the top, bells idealy should touch the bridges.
Since you asked the reviewer to clarify it`s best to let that person answer.
Stunt only has 2 rivets/fasteners for the holster, yours seem to have 4.
Frown appears fine - can`t help there.
Keep it up - almost there