2g Tig pipe test

[Chez1291]

I am currently doing the certificate 7 tig course (Australian certification) it is on 90 mm, 3 1/2 " od pipe with a 6mm, 1/4 wall in 2g and 5g positions. I'm fine with everything until it comes to the capping run, my teacher is telling me it's is belly at the bottom to much, even though I am adding filler at the top of the weld. Could anyone help me with. My problem please? And could you post pictures of comparison welds that would/have past equivalent tests, mostly in 2g position

Pictures are on my iPhone and I'm not sure if you can upload them straight from there so il get back to use with that