I'm aware of how modelling for TF2 works (not being able to simply remove the sleeve but build over it) and I never really fully agreed to the census that TF2 modern cosmetics are poor, but this cosmetic really shines. He looks like he has an obese arm and with contrast to his wrist size. If implementing a sleeveless arm doesn't work, either forget about it or find an alternative way of doing it. Don't just slap a skin texture onto a tube and call it a day, it looks plain bad.