My advice would be this, "Learn to walk before your start to run". Too often we see people gaining a qualification certificate, down to them being able to retain information well, when it comes to putting these gained qualifications into practice however, they perform very poorly.
I have seen 3.1 inspectors having to educate many 3.2 inspectors due to their lack of experience and knowledge of welding ,which being a welding inspector can help a lot.
please don't take this the wrong way.