I've made a couple more AmiDock icons since this was OP.
One I did today, for my AdSpeed accelerator. One-click gets me to 14Mhz (I don't add it to my SS by default).
The other one is a calendar icon for the fantastic WP Library software. Man, I would _love_ for crafty software dev to figure out how to make WP Library hit my Google Calendar. That would be SO cool! Oh well, one can dream. For now I simply keep on manually entering things redundantly. Because!