[TCLP]

You mentioned woodland multicam. Do you mean woodland and multicam?
As far as tan that acts green, Khaki is your friend there. It's kind of an in between for the 2.
A set of good glass and comms will make you an asset to your team to be able to relay vital information back.
A reliable secondary to switch to when people get close. Most people don't like getting a hot gun with heavy bb's up close or there is a min engagement distance.
Some fields have restrictions on ghillie suits check with the locals and see if they have issue with them. If they don't have issue look up how to make them and build them for the area of operations. Not every field is the same so make adjustments accordingly. Either way learn field craft in the way of masking your movement so you don't stand out.
Make sure you have enough equipment to last a game and that it isn't large and cumbersome.
Shoot lots at a range if you can. Learn how your gun works. You have a limited ability to shoot, make those shots count and the best way to do that is practice.