Sometimes within a job role you may have performance reviews. These are often carried out by a line manager or director and are set up to review your performance at work and see which areas you excel in and other areas that you may require additional training or experience in. Many people get nervous about performance review meetings, but as long as you have put the effort in to your job and done the best you can then there really is no need to get nervous about it.
If you do not have performance reviews or even if you do then why not carry out a self assessment on your work performance. You can make a list of task you think you are good at and ones that you struggle with, maybe that take you to long to do or that you do not feel you have the relevant equipment to complete it at the level it needs to be. Once you have this, ask for a quick meeting with your manager to run through your ideas to see if they can help offer advice or look for training for you.