Welcome to the forum , you sound like you have a good attitude to dear old Parkinson's .
There's a lot of good folk on here and a wealth of info from people who know what it's like to live with the illness,
As for fairy cakes I find using an icing bag lets me have more control over how much I put in each case, though I do have to tie the fairys up or they escape before I can get them in the oven lol ...........sorry I have an awful sense of humour .
Anyway welcome again , live well. Cc