Your photo is great.

Sometimes for me I have found holding the coin in one hand and photographing with the other is best. That way you can tilt the coin to find the best lighting for the coin. I also don’t get the camera too close. Sometimes focusing on the details of the coin is easier from far
away. Then I crop the picture for a closer view. I just use an old iPhone 7 for my pics.

The 2019 koala is so cute. I also really love 2015.