The drawing is cute, I like it, but the reason why I’m not giving full on 5/5 stars is mainly due to the line work and the background, the rays have weird black lines separating the sides and the middle, and they look out of place.
The line work itself is a bit sloppy and could use a bit of a touch-up, but this is coming from someone who also draws quite sloppily, so saying that sloppy line work is a flaw is a ricocheted bullet to my leg.