Finished tonight in around an hour on tablet in Photoshop. I drew it while looking at the series' title card for reference.
Here's the lyrics to the theme song, written by Howie Post and composed (and sung!) by Winston Sharples:
Oh, Honey Halfwitch, she's a funny
Kid witch, what a honey
When she flies up on her broom
She zips around with a zoom-zoom-zoom
She's magical and mystical and smart
Oh, Honey Halfwitch, bright and sunny
She's as cute as a bunny
She's half-wizard and half-girl
She waves her wand and you're in a whirl
She's full of tricks and sweet as an apple tart
A half-pint pixie sure to win your heart!