You may already know the deadline for the Kindle Storyteller competition is approaching - 31/08/2019. The URL is
www.amazon.co.uk/b?node=12061299031&tag=mumsnetforu03-21&ie=UTF8
Full length booksand novellas can be entered - 'the paperback version of your book must be at least 24 pages long so shorter works can win'.
The 'deal' is slightly different to a traditional competition in that works need to be available for sale.
I've picked a couple of stories that are somewhat tangential to the main narrative of a couple of my stories to upload so the novella format works (hopefully). As with the recent Curtis Brown one, it's encouraging me to finish something instead of spending more time developing new stories.
Good luck.