Hi @RobinC it is far from intuitive, but if you click on your username at the top right, select attachments, then click on the thread link on the right hand side column, it takes you to your post. If you then click the three dots in the top right of the post, giving you More Options, one of which is Edit, select that and it takes you in to the post, and at the bottom of the post is Uploaded Images, and the little X in the top right of each picture allows you to delete the actual image, rather than the link to it which is in the post above it.
As I say, far from intuitive, but hope that helps as we need to see the pics of the Bucket List Project!
Cheers
John