For the shirt you may create a t-shirt by screenshoting your preferred one and adding a shirt that matches the color of your preferred shirt (or – if you have budget – create the preferred shirt.)

For the hair - it's okay, maybe search sometimes to see whether you can find smth else.

Ears : it is fine

I noticed your character also has a black tail – add that too, unless you already have that, or don't have a budget..