Hi Katrina,
Please forgive me if I be harsh here - it's not out of spite but rather out of a genuine desire to help.
Remember that your flyer is competing for attention with hundreds of other pieces of advertising. This news story opened my eyes:
BBC NEWS | England | Tyne | Junk mail turned into sculpture
Imagine a flyer being a combination of a road side billboard advert and a sales letter
The roadside billboard part means that you have to get the message across in 2 seconds and persuade the person holding the flyer to take another look rather than to bin it.
Nothing on your flyer does this. Nothing grabs my attention and says read more. You need a powerful headline that stands out and entices people to read further.
The second part of the flyer is to be a sales letter - it needs to persuade people to do business with you by showing them some of the benefits you offer. You've got one partial benefit listed "evening and weekend appointments" but I think you could develop that more to tie into your client's unmet needs - they're busy at work, stressed etc.
This part of the flyer can be long - don't be afraid of writing all the words you need to convince someone to take the action you want. I've had great response using a terrible looking flyer with a lot of words - we got more than 15 responses for every 100 flyers we distributed.
The flyer is missing three other things:
1. A call to action - spell out what you want the reader to do - do you want them to call for an appointment, do you want them to visit your website? Make it clear and strong.
2. A great offer - why should they do what you want them to do NOW. Perhaps some kind of incentive. I presume that you're hoping to get a few more regular clients with this flyer and not just hand out some treatment brochures.
3. A tracking mechanism. You must track the responses to your advertising to know what's working and what's not. You can do this by setting up a separate web address with tracking software to track responses, asking people to bring the flyer in in exchange for some incentive etc.
I do hope you're not offended - I seek only to help.
Kind regards
Pete Bowen