I'm concreting my sleepers in tomorrow around 4 pm when my youngest in bed. It took me three hours to dig my 70 cm trench, and I'm building a vertical sleeper flower bed. I spent the rest of the afternoon sawing my sleepers to size
They will step down every two by 5mm so I'm praying it turns out really great as a lot of time and effort spent . will post a picture tomorrow. It won't be finished until next pay day, I'm going to get the smaller size sleepers and put them going in an inverted curve from one end to the other so its like a triangle but with a curved edge 🙂 
So its kind of like the bit on the left hand side of this picture from pintrest but mine will be slightly different 🙂