During your Master's programme you choose your specialisation, your elective courses, and your internship. All of this prepares you for the steps after your Master's: your first job.
To help you reflect on your choices and the skills you need during and after your Master's degree, you will have to complete your master portfolio.
Apart from the activities in your portfolio, it is always helpful to contact the Career Service Science. Apart from the help they can offer in finding you a job, they also organise events and workshops to provide you with the skills you may need.