Greg is spot on about shirt color.
However, I would go up higher in mesh count.... at least 60 lpi (maybe 65) and put it on an even higher mesh count like a 330 or 350. 70/90/70 or harder. Make sure that squeegee is sharp enough to shave with as well.
There is so much detail in there its crazy for a left chest.
Hmm.... I would honestly do several different strikes with different mesh count/lpi combos till you find one you are happy with.
Ah, you updated. I might still take a stab at it if I were you. Use some downtime and improve your skill set