On: Tips for mathematical handwriting (2007)

[gerdesj]

p is a vertical downstroke followed by a vertical upstroke and then the loop. rho is a curved upstroke and the loop all in one go.

Z - try putting hooks on the head and tail of the letter - I'd stick with crossing your zeds/zees.

Funky calligraphy is not for everyone - you can always explain things with prose. The important thing is the message.