I wish I had a machine like that because the idea of making up men own "signature" stitches is so appealing! I'm glad you are learning new things about your machine and making such interesting works!
I all of a sudden remembered that I can do lettering, which means that it has to be in the memory for to complete a word or name. Then it struck me that I can use all my modes (my machine has three, four if you count the lettering/numbering) so I can select say mode 1 and the stitch number put it in the memory, then select mode 3 and the stitch number etc etc. Its fun learning more about your machine. But like most things we dont use them to their full potential. My Machine is a Janome Memory Craft 4900 QC Stitches can also be saved in the memory. While the machine has been a real pain at times, it really gets a good work out.