You've asked a good question. What makes a picture "good"? Putting up one of your own photos for critique is an excellent way of learning how to answer that question.
The principles of what makes an image 'successful' are fairly straightforward. Sure, you may think of an image as a "good picture" because you like it, but you'd probably like it even more if it had even stronger pictorial qualities. Instead of asking yourself if an image is 'good', try to get into the habit of identifying qualities of the photo that could have turned out even better. Even if that quality is something that would have been completely beyond your control at the moment of capture, it's really good practice to recognize what it is.
In this case, you have a photo that has some nice 'passages' in it, but that could come together better as a whole. The low light coming through the trees is terrific; the background has the best light and the most detail and is therefore the part of the image that holds the greatest visual interest. That means it's more picked out than your subject, and that's the reverse of what you want. Your daughter is relatively dark and small in the frame, making her unable to compete with the large, bright background.
Ideally you would have had some off-camera fill flash giving her a full range of tonal values, and she would be larger in the frame, preferably with part of her breaking the plane of the snowy 'horizon' line, so as to tie the two regions of the photo together. Both of those things might have been too difficult for whatever reason, but that's really besides the point. When you can identify things that could have made a photo better, you can carry those lessons forward to future shots and thereby improve your photography.
Even just some on-camera fill flash would have helped here. If you're going to be shooting a backlit subject, be prepared with your flash up and ready to go. Also, when you're photographing children, it's usually best to get right down to their level. That will give them more prominence in the frame. In addition, consider being further away and using a longer focal length and a wider aperture. That will help you to get some subject separation by making the background out of focus.
At any rate, you have a photo with a pretty background and a cute kid in it, and that's a good start. 