It is extremely hard to tell if the photo is good or not by looking at the low-res version of the photo. Try opening it up first so you see the actual size of the jpeg. There are a few things you can look out for- regarding quality, sharpness etc. It has been sharpened quite a lot in some areas but there are other areas which are very soft. Jagged edges represent oversharpening. It takes practice to be able to spot things.