I have received great leads/clients from the IDEA site (and even a connection or two). I agree with Harris to make sure your profile is complete. Also, if you have clients who have been successful and happy with your services, it may help to ask them for a testimonial. Always ask–many times clients are happy to do this and building a foundation of testimonials may help when people are searching for a trainer.
In addition, other suggestions I would have are to make sure you have a professional looking photo (which you do!), and to just be yourself when writing about what you offer. Think about what sets you apart from others with regard to your services.
IDEA is a wonderful and professional resource to use in many ways, and it’s great to be able to use this to also market our skills. Also consider other ways to market yourself in addition to this site.
Good luck to you!