Hi Charity
You have an advantage in that you have been working as a PCA for the last 3 years. Being a new EN, you will need to network. Use the facilities where you did your placements. Maybe, start on their bank to get experience, join an Agency, use your Clinical Teachers as referees. Ask your current employer, for any opportunities as a Team Leader EN. Go to all the local hospitals in your area, and ask to join the hospital bank. Look out for new grad positions offered online, but you may not want to start all over again, unless it is in an area that you haven't had much contact with. Like mental health, or perioperative, day surgery, or theatre.
Good luck