Not so well stacked

I experimented with focus stacking tonight - a new technique for me. The post-processing is easy - I downloaded Helicon Focus for a 30-day trial - but getting every element focussed in camera is quite difficult. One of the reflected flowers is a bit awry. Trying to get into the right position to get an uncluttered ceiling reflection was another challenge. It's worth persevering though. Time to get the bellows out I think...