Agree with Nick you are selling you as a professional, promote yourself, your personality, quals, achievements and be clear why you can help me the client be a better carer. You will find a knock on effect with advertising, you could do a local press release / interest angle from the perspective of a busy mum of 2, working from home helping other mums/dads with parenting skills.
Ask some people you have helped to put some testimonials up, and highlight snap shots of these and pop any associations or qualification / insurance details on as well memberships inspire confidence.
Just on the appearance of the site it doesnt seem to gell with me, the pics are modern whereas the text / typeface and background is from another decade, and makes my eyes go a bit wuzzy, putting your name / email addy on the top of each page makes the pages huge as they take a lot of space up and I kept thinking I'd already looked at that page IYSWIM. I always find a plain background with couple of key colours, used to maximum effect work best, Nicks is a good example of a well flowing site.
Its a good idea BTW and I think you could promote your service really well at NCT groups, and local Sure Starts would perhaps get you in for group chats etc.
Have you had a look at vista print, their webbys are really easy to manipulate, you could design one and wobble them about to give you some ideas, they have pre-set templates and then ones that you can totally change colours of etc, you can wobble about with them without buying, although I have one and I like the really cheap matching everything that you can get (and freebies) its good quality stuff and if you dont have thousands to spend on branding no one would ever know.