Hi Roger,
Looks very good so far.
I use a similar process, but I make 'post-it' type notes from paper and Tamiya tape.
Works just the same as your method, but helps to prevent overspray by being a little larger and therefore the spraying needs to be less accurate, a benefit in my case.
Also I pre-stick the Tamiya tape on the back of my hand or forehead to reduce the 'tackiness' of the tape prior to applying to the subject.
Keep at it R, it looks great so far.
Cheers,
Bigkev