welding front part

I have started welding the front part.

 the spacer is needed to keep the distance for the wheel.

 These parts are very hard for me. I have never learned welding. that's needed for me ?

 same way to connect with rear part.

 welded.

 off course like these parts are also hard for me.

very dirty work !! I need Tig welding machine if i get beautiful welding.
I used the rod for arc welding. the diameter is 1.6 mm. because the thickness of rectangular's wall is 1.6 mm.
If I use 1.4 mm rod, I will be able to get beauty welding ?
I don't have no idea.

Fini.