well, it's up to you what formation do you want to play... but if you want to play 4-3-1-2 (3MC) you need to put MC instead of MR. if you want to play that formation, then i think your orders should be : short passing,through the middle,tackling and mentality (depending on your opponent),pressing own half,zonal marking. i think you should remove ALL the DOWN arrows in your defence. if you want to play little more defensive, you can put DOWN arrow on the MC in the middle (i usually use that on MC who has better defence than the others have)...if you want to play 4-3-1-2 (ML,MC,MR) you'll need a ML. the difference in orders is that you have your passing mixed...
i forgot to say that you also don't need that UP arrows on your AMC and ST's. sometimes if you want to play little more offensive, you can put UP arrows on AMC but i'm not sure cause i have never tried it myself.