slow91fj90, I need to get a sticker like yours... looks like it came out of a store.
d0ubledown - come to think of it, the corner is just the plastic mould and there's some thin steel cage/reinforcement underneath just where the actual real bumper ends. If I wanted it to sit flush, I would have notched the corner, but that would not allow me to remove the carrier totally without having a gaping hole on one side.
As it is, I'd just need to cap off the hole where the spindle comes out, or just put a cap on top of the spindle.
[edit] I didn't have a welder too or knowledge, but started small on other projects first to practice... side gate, little bits and pieces,... etc.
Practice makes perfect, also I upgraded from an arc welder to a cheap mig welder. I used both on this job. The arc/stick welder to attach the angle to the frame as I wanted some real strong welds and I don't think my mig was as powerful, plus it was hard to weld in a tight spot and upside down. The mig was used on the rest.