During your NQT year, you will need to track your evidence against the teacher standards the same way that you did in your training year. This will not only help you to develop, but it will help inform your mentor meetings and also enable your NQT mentor to write your NQT report.
Some local authorities and schools have their own specific way of doing things so always check there first on how they want to see your standards evidenced, but there are some great resources out there that I have adapted for the NQTs I work with to demonstrate our evidence towards the standards.
You won't be able to utilise evidence from your PGCE/training year for your NQT year, it all has to be freshly collected evidence.
This bundle from msaghjohnson on TES: https://www.tes.com/teaching-resource/new-teachers-standards-evidence-tracker-template-6260122 is a great little package to get you started on evidencing what you have got.
Another example tracker is available from Twinkl https://www.twinkl.co.uk/resource/t-c-1586-evidencing-nqt-standards (but this may be more suited for mentor use rather than your own.) They also have a great set of resource packs for NQTs on how to structure your folders which contains some really useful bits and pieces, some of which you could make a start on now ready for September - these do tend to be aimed more at Primary teachers though, so secondary teachers may need to adapt them if using them https://www.twinkl.co.uk/resources/slt-secondary/teaching-learning-slt-secondary/nqt-standards-folder-teaching-learning-slt-secondary
There are also a number of local authorities who publish lists of the types of evidence that you can use to evidence your teacher standards. Some of the better ones are:
I have also created this guide for the trainees and NQTs I will be working with to help them evidence how they're meeting the teacher standards
You will need to be organised! Your mentor should be an experienced colleague who will have done the job for several years. They should be able to quickly point out to you where you have met a particular standard and which substandard it relates to. However, this may not always be the case so keep your PGCE/SCITT hat on when putting your standards folder together. Take photographs of student work, feedback, student feedback, classroom displays, report cards you've filled in - anything that shows evidence towards a substandard. It's a case of "more is more" and so the more you have to choose from, the better the quality of evidence you will have.