This is a simple exercise to realise your ‘style’ and then develop it…
Do all this with your own handwriting for best (most natural) results…
First, think of the thing you will say, or ask, & note this somewhere – it will be the caption, so across the foot of the page. e.g.;
“I Love You“
When you have done this turn it upside down.
Now, draw a speech bubble down from it’s point.
Then, in the speech bubble, write two exclamation marks ‘!!’
Then turn it around again.
Further embellish this (stylise it) to your liking
& have fun trying 😉