Well being on time and attentive is a must. Even though you may be trained that doesnt mean you shouldnt watch how the kitchen functions and how others do certain tasks.
What you don´t understand or don´t know how to do... ASK. Do not take the risk of getting called out on something you could have simply questioned and received clarification.
Work clean, don´t make a mess and dont leave a mess sitting on the counter. A mess will only get bigger until you do something about it.
Be organized, it may be the first time in a kitchen, but still organization is key.
If chef asks you to chop something you ask what size. And make sure he sees if you are chopping it the right size.
Try not to cut yourself, make sure you are wearing clean clothes, and just pay attention.
Tip: Carry a small notepad and pen in a back pocket, apron, chef coat etc... writing things down helps.
If possible cellphone on mute or on vibrate. Cellphones on the line don´t work out at least keep them in a back pocket and only answer them when you arent busy.
On my first job, i would write everything i needed to prep (i prepped everything to a T) the night before, double check at work. I would cross out tasks after they have been done. Even if you have the ingredients memorized it doesnt hurt to have a list.
You working their for a year already gives you an advantage because you understand the ordering system as well, and you know the cooks, and you know the waiters. You will be fine.