Don't worry!! You're well experienced and that alone will get you noticed... There are a number of sites and agencies you can use to find work - and at the moment there are so many more jobs than fantastic Nannies!!
Firstly, take a look at your C.V - Is it up to scratch? Try rewriting it from a new perspective, you might find that it puts you in a different light which might give you the edge over another Nanny who applies.
I've found emailing a photo of yourself with your C.V is a nice way for families to know who they will be interviewing before you come along - send a photo where you are well presented and ideally with a little one!
Think about your interview technique - do you address the children first when you go into an interview or the adults? Do you play with the children whilst talking to their parents/Take an interest in what they are doing or their games? If you are offered coffee or tea, do you make a point of making sure it's out of reach of little hands? Do you ask plenty of questions and pick up on any open opportunities to offer friendly advice... Think about the little things which are noticed by parents and will put you in a good light.
When putting out ad's, try and give as much information about you as your interests in relation to the position as possible... are you fun? do you like reading? enjoy singing? love music or baby groups? Like messy play such as painting and craft? - link your interests to how each one can help with sensory/social/educational developments of their children to show you are considering their development and not just their care.
It's all easy things but I have seen some Nannies put:
"Hi I'm Esmeralda, I have been a Nanny for 6years and I am looking for a full time position in Sussex. Please contact me."
No information on interests, qualifications, CRB/First Aid, references! Madness!!
Think from a Mum's perspective and make sure you include all the things relevant to you that you would want from your Nanny!!
Chelsea :) x