I agree that it sounds just a little odd, but in this case 'your field' is like 'your field of interest/profession' pretty clearly, and the oddity comes from using the word 'acts' which in this case does not mean 'acts on film / theatre' but just 'operates' / 'is active' / 'is engaged' / 'works'. So I think this sentence is basically fine. There are much worse ones around here on Duo 8-)
You are beautiful. Your eyes are blue. = Você é bonito/a. Seus olhos são azuis.
She is beautiful. Her eyes are beautiful. = Ela é bonita. Seus olhos são bonitos.
He is beautiful. His eyes are beautiful. = Ele é bonito. Seus olhos são bonitos.
If you use VOCÊ, use SEU, SEUS, SUA, SUAS. Olhos is masc. pl. Then you must use seus, masc. pl.
If you use TU, use TEU. TUA. TEUS, TUAS. - Tu és bonito/a. Teus olhos são azuis. = You are beautiful. Your eyes are blue.