This is a cry for help!

[jimmypolo]

There's a pic of where I'm welding cos I don't know if maybe there's too much of a draft affecting the gas flow. I 'tested' the draught with a lighter but the flame doesn't seem to be affected too much by any draughts

 

[jimmypolo]

The second picture of the alleged welds are from the back. It's also a new regulator as the one with the flow meter had an odd size connection so wouldn't fit the gas hose on my machine

 

[tom2207]

did you buy zintec steel ,,, ?? is no one local that could pop past and give you a course ?

 

[jimmypolo]

I've had the steel for years so I can't remember what it is or where I got it from. It is completely rust free though so (from what I've read) it probably is zintec. I'll maybe give it quick once over with a flap disc and see it that helps. Cheers

 

[bourbon]

defiantly run it over with a flap disc to nice shiny metal. What mask have you got? hopefully an auto darkening. that will help massively.

 

[BrokenBiker]

Looks like the results of welding galvanised so quite possibly zintec

 

[jimmypolo]

It looks horrific but I think I've made some progress. Penetration isn't very good and you can see the joint on the pictures where I've ground off the weld (zoomed right in). But it stayed solid when I bent the steel to check the strength (unlike a previous attempt in one of the pics) I ground the coating off to bare shiny metal and I'm fairly happy that I MAY eventually be able to fix my car

 

[Erie Fred]

Spot welds look better.
Now try holding the trigger on for more than a second.

 

[jimmypolo]

Front/back/profile

Trigger on for a little longer so I got penetration but I think I rushed too much so it's far from straight....

 

[jimmypolo]

Gas flow set to approx 23 Cuft/hour 11.5 lu/min
Need to take my time next time
But first another cuppa

 

[badabec]

And you using both hands? One for trigger, one near the shroud to direct and steady.

 

[Morris]

Front/back/profile

Trigger on for a little longer so I got penetration but I think I rushed too much so it's far from straight....

That's not bad for a beginner imo. Penetration is ok. It's certainly better than a lot of MOT welding I've seen.
Getting good looking welds on thin sheet takes practice, the "long tack" technique doesn't help.