hello! lovely Adobe Community.

1. You are competing with 800+ million other assets in Stock inventory. Below is what Stock has to say about similar content.  See links below.

• https://helpx.adobe.com/stock/contributor/help/similar-content-guidelines.html
• https://helpx.adobe.com/stock/contributor/help/how-to-submit-distinct-content.html
• https://helpx.adobe.com/stock/help/find-similar-assets.html

2. Assets of Christmas ornaments are in generous supply. 

https://stock.adobe.com/search?k=christmas+ornaments  23.5 MILLION results.

3. Seasonal assets should be submitted at least 4-5 months ahead to allow enough lead-time for review & corrections if needed.  For best results, create & submit your seasonal assets well-ahead of their intended use dates.  

4. To get accepted, your assets should be better than what Stock is currently selling. Customers come to Stock expecting to find commercial quality content for use in professional projects.  Other services have different customers & different acceptance standards.

Hope that helps. 

You are not addressing Adobe directly here in this Community; the participants are other Contributors just like you. Reread the Adobe Stock guidelines as well as the rejection message you received and you will learn that Adobe rejects based not only on similars within your own submissions and portfolio, but all other assets in the database. 

The similarity is fairly obvious in this example. In any event, assets rejected for similar content apply to the entire database, not necessarily to your own assets in particular. (Also, one of the examples you submitted is poorly cropped). Last but not least, we are contributors like yourself, not moderators, so we can only provide our opinions when it comes to rejections for similar content or quality issues.