Do you know what you need to do to get better marks? If not, then this is a bit worrying. Many people start off getting 2.2s and thirds at the start of first year, but if you haven't improved through the year, and you don't know how to improve, then that is a bit of a problem. A "good" degree is considered a 2.1 or above- so next year you really need to be aiming for as many pieces of coursework as possible over 60%, otherwise you will cut down your post-grad options a lot.
Do you have exams, and how do you think you'll do in these? Are they asking for similar skills to the coursework you haven't done so well on?
In order to improve, you need to identify where the problem is. Read your feedback carefully, and ask lecturers for more detail if you're still unsure where you went wrong. It may be that you have problems with a specific skill, e.g. essay writing. There is often help available for problems like this- so have a look around and see what is available. Many universities have essay writing workshops in the library and so on.
It may be that you don't know the content well enough. In which case, you need to go back over it and indentify areas you don't understand. Lecturers will often be willing to go over a specific area if you ask them to, or you could try and do some extra reading to try and help your understanding.
Contrary to the trend, I got a lot of 70%+ plus grades in first year. My grades dropped a bit at the start of second year as the marking was a bit harsher, but have gone back up to firsts in third year. You really need to make sure you get a 60%+ average in second year.