Hi @Myka,
Welcome to the Trusted Housesitters Forum - we have thousands of fantastic members who can share their knowledge and experience.
On our forum, we do offer a category to promote last minute sits - when they’re due to start in the next week or so.
Other than that, we ask people not to directly post links advertising their listings as our forum could quickly become flooded.
Similar to what you’ve done, members can share links to their listings in their Forum profile and will often ask for tips/advice from others about the listing and recommendations from the readers POV - of course, that advice is completely subjective.
As @HappyDeb mentioned, this has the added benefit of drawing extra eyes from across the forum to your fantastic home and Willow. 
Have a great day!