Hi All and merry christmas

I am playing a 4-1-2-1-2 and pleased with how it is working.

Anyway i want to improve my team and 1 thing i need i better special abbilities.

so i need advice

GK - one on one??

dr/dl - Defensive wall???

dc - aerial??

dmc - ???

mc - ???

amc - corner??

st - one on one??

i hope you can help me

THX in advance