Welcome @cindyh !
Good advice from @Silversitters . Key to finding a good match in my opinion is to try to think what a sitter would look for to choose to apply for your sit and choose you. I think this blogpost has some good points:
Injections will limit searchpool, but many sitters have experience also. Just be accurate in description of tasks in your profile. If a sitter is unsure of what is expected they will probably scroll on to the next profile instead of asking you, so a good idea to include.
Lots of people here would be happy to help you maximize your listing to attract a good sit, should you wish to. You can add a link to your forum profile should you wish to:
How to add a listing or profile link to your FORUM profile
Wishing you a great THS-journey!