Nice try there mate 
Better bokeh also depends on the background itself apart from aperture setting and Depth-of-Field oh 

For example:
Decent bokeh:
Rooster by PF T.J., on Flickr

Green Crested Lizard 1- Bronchocela cristatella by PF T.J., on Flickr

Less satisfactory bokeh:
Hen by PF T.J., on Flickr

Green Crested Lizard 2- Bronchocela cristatella by PF T.J., on Flickr

These are not very good examples but I hope you get the point haha
Good bokeh is usually attributed to smoothness that is less distracting to the eyes 
The respective shots above are taken at exactly the same location and time, so I just want to show you that usually you could improve your shot just by just taking a few steps WSAD