ash if you are gonna weld it yourself get some bits of scrap metal to practice on first.
mig welding is pretty much point and shoot but the skill is getting it set up properly
you want the sounds to resemble "frying bacon"
too much power and you will blow holes all day long, too little you wont fuse metal properly and it will just snap, too little wire feed and you'll end up tack welding at intervals, too much and you will clog the contact as it burns back.
its a precise art tbh. but the only way to do it is to practice.