Yeah you know , I wonder why you got 8.3 for this mini. I like the base , but the minis is not really clean. Indeed it's a tad grainy , hmm not really a tad but it's hell grainy everywhere.
I would recommend adding more water to the paints on your palette , and wiping the brush from all excessive paint... Also with the level here , metallics would be far better than these attempts with NMM.
I strogly advise reading some articles about nmm before trying to paint some ;)
overall a good 6 .
Hope to see more of you soon , and improved I hope :)