I'm Spasticus Autisticus!
All I wish is for people to think twice - when they see someone who looks too "young" to be disabled, or who isn't using a mobility aid but still needs a blue badge, to be aware of hidden impairments.
These include issues with balance, mobility, stamina... or heart or lung problems... or autism... or epilepsy...
So my brief message is to encourage people to think twice and not to make assumptions about people. If someone identifies as being disabled, or even just takes a little longer to get out of your way, it's probably for a reason.