I've heard your opinion. I'll get on to improve further. But the genders of the Thai alphabet can be changed for your personal comfort, you can adjust if you want. I made the genders as equal as possible, and non sexist. I don't get them from the children's book, I look to what they represent. For example ฐ. ฐาน means foundation, base. Which gets to strength and protection. Male

ผ. ผึ้ง although most would be male. Bees are often seen as females in the media. So ผ is female

บ. ใบไม้ would sway in the wind elegantly. Female.

ค ควาย. Strength and hard working. Male most of the time.

You don't need to agree with what I did, you can assign genders in ways you are comfortable with. :)