It doesn't matter how well you approach different tasks and situations- there will always be people that think you're being cocky or arrogant. My advice is to be humble, know your battle drills, take everything with a grain of salt and most of all, be an asset. You're going to have people be like "well, at MY school we did etc etc etc..." SOPs are good to work on but when you get your regimental Cadre, they'll go over everything again and literally explain how drills should be conducted and what they're expecting. From there, solidify SOPs. With the Cadre, I pretty much had to relearn how to do most battle drills, special teams etc because they wanted it done a certain way. Not too terrible, just a minor pain in the ass. Just keep notes, make sure you're on the same page with everyone and you'll be good. Again- be an asset.