I don't think your handwriting is bad

I think these sketches are awesome to see!

It gives your art a new perspective and I personally love sketches ^^ Sketches are just as important to do as outline/line art or coloring.
Anyway, the character herself has a bubbly, happy, and energetic vibe even when she looks down and sad she's still manages to warm my heart. I think how you drew her small stunned/shocked eyes and her happy

sketch on the second page are my favorites. The clown outfit I could see her using it to try to cheer up a sick pony

Her hat sketch is really impressive to me, and I think the interesting sticking up little section in her mane is a cute addition
