The best PP is getting the shot right in camera, iarnov3
Welcome to the Forum!
Okay, as far as the PP goes it looks fine. The first images, though, looks out of focus and there isn't much you can do in PP. My suggestion is to use only the center focus point of your camera and aim to the birds eye. That is where the viewer is going to look first.
The second image looks good: well focused and exposed. Yes, you got it right in the camera
What could improve the image is a different composition. The subject is to small in the frame and there are a few distracting elements in the image that take the viewer eyes away from the subject (the dog). Putting the subject in the center of the frame gives also a static feel.
Another way to improve your images is to look at others photos and see what you like and try to achieve the same results.
The best way to get better pictures is to get pictures
Socrate
Welcome to FredMiranda.com. You're off to a good start, and the advice that Socrate and Grant have offered is great.
I really like the second shot of the dog and the fence. Just for fun, I cropped it tighter to get rid of most of the extraneous items fighting for the viewer's attention. I left in the string of lights above the dog's head, but given some time they could probably be cloned out to improve the image. Best advice, as Socrate suggested, is to take your time before pressing the shutter to look through the view finder and isolate your main subject.
Here's my "quick-n-dirty crop"...I hope you don't mind my cropping your photo, but if so, let me know and I will remove it.
Welcome! You are off to a nice start. First shot looks like the shutter speed was too low - I see some motion blur. When you save your images for posting, use "save as", not "save for web". The latter strips the exif data, and we can use that to help you ~ Ron