I need 18 kawaii style plant/herb characters

Description

I need a designer that can turn my hand drawn micro herb characters into graphic ones that I can use to make stickers and use on digital assets. I need each character in a png format and on a coloured background. There are 18 designs in total.
I like the Japanese cute characters, so I am looking for a designer who draws in that style. I have attached an example and I am happy for you to improve the characters to make them look effective on screen.
Any questions let me know. Thanks