I am no pro but your beads are consistence which is good but I think your travel is too slow. You are depositing too much metal. Your bead should be the thickness of the metal you are welding.
I agree regarding the welds.
Metal prep is huge with MIG. I thought most of the welds looked a little "cold" too. Fusion on the edges could be better with a flatter bead profile.
Practice, practice practice.