butt welding exhaust system

So I see no one on this thread knows how to butt weld correctly.

I got the complete system tack welded in place. I have 5 or 6 butt joints to weld. I Grounded a slight point at both end of the pipe for the weld, and tried to get it as close as possible. " doing my best laying on my back with the car on stands.

What are you holding back Rusty?