Please do not be so impatient. It is unrealistic to expect responses after a thread has been posted only 30 minutes.
Overall, it is a good start. The pose is alright, but the lighting is bad. Your parents are under exposed and have shadows across their faces. Additionally I would have shot in portrait orientation rather than landscape. All of the space on the sides detracts from the subject. One last thing, It is hard to tell from the low res image but it appears that your father's eyes are slightly out of focus. Therefore, the aperture should be increased.
Keep practicing and you'll get there. It just takes time and a bit of effort.