Itay's website is really great for all the tips I can think of ...
Another point I can add is while shooting film, post editing could be done in the darkroom but nowadays photoshop seems to be a taboo, nobody want to open image in photoshop because thay are "modified" is not what come off of the camera, but with most highend DSLR, when you open RAW images in photoshop, images would look really flat and boring and it what they wanted so you can have the cleaness base to work on.
Picture can be taken "out of the box" and look way more process and unreal then if someone do it genuinly in photoshop.
In your picture, you dont have a lot of contrast, WB is probably off and you have some hot spot. Also the depth of field is not wide enough so everything before and after you point of focus is blurry.
You can still take good picture with a point and shoot but it harder since depending on the model you cannot control everything.
For the WB, you can force camera raw to open jpeg file too, I don't remember if you can change the wb since i never shoot in jpeg but I would have a look tonigh.
Hope it helps a little bit