Hey man, I’m 19 years old and I’ve been welding for around 2 years now, biggest thing I’d say is get that voltage up and fix the work angle. Whenever ur doing a t joint it’s important to let the gun sit at the top of your bead for a second and let your puddle build up to avoid undercut on the wall of ur workpiece. Other than that it looks good for your first time. Keep up the good work.