Good shot or no?

Strictly talking photographic style, i think you under exposed a little too far. I think you could stand to image edit and bump up exposure, saturation, and... i forget the other standard. Its not bad by any means, but for me id want to see more colors and a little more pop to the image.

I don’t know what Instagram standards are. But this is a good pic. Great smile, and peaceful scenery.

It's fantastic. Love your smile ☺