Ablehnung Bild

For reference, this is what you're competing with:

https://stock.adobe.com/search?k=baby+cartoon

I think the fingers of the baby's hands could be improved, the hand on the right particularly. Maybe even to go so far as going with four fingers instead of five, as is typical of many cartoons.

Take a closer look at the edges of the drawing. Some lines aren't connected; others are blurry. PNG file format is supposed to be used only for assets with transparent backgrounds. This asset would probably be more useful to Buyers if you edited it to have a transparent background.