

I've been learning MIG welding at my engineering internship (tips wanted)
For my internship assignment I need to make a space frame for a research vehicle. I've been teaching myself how to mig weld for the last 3 weeks because of it and here's a practice piece of mine in the photos. I still suck ass at tube welding and those I want to ask
How are my current welds and what's there to improve?
What are techniques or tips to attack tubular welds and to improve?