It's all good. Lets talk about images...
(1) Everyone is going to have an opinion. This forum is full of good people that reply to help. I doubt if you will every get a response that is intended to be anything but help. With that in mind, have fun...
(2) I like Photoshop as my image editor so I am naturally going to lean toward suggesting that you learn to "gently" use CS. However, the software is not cheap (unless you are a student and even then it's not "cheap"). The digital darkroom, as its called is as important as the camera. The most important part though, is the photographer. I've never seen a camera take a great image.
I don't like what I did to this image to be honest (theres an opinion for you

). I was going to show you what a few quick photoshop tweaks can do for an image but I kind of over did one of them. I flattened the image before I noticed and since the point was the crop not the tweaks I decided to post as is.
The crop is what's known as a square crop. If ever there was a time when a centered image can work it's with a square crop. I also took out the stray leaf at the bottom left. Now you have a somewhat uncluttered background and the focus is on the flower not the big dark spot in the upper right corner.
Light is your friend. One of your images has a pink flower to the far left side. The bulk of the image is "empty". If you crop the center to right side of the image out it'll bring the focus to the flower. BUT- the thing that really brings the focus to the flower is the little kiss of light on it. Your'e eye saw that and that's what caused you to shoot the image, even if it was unconscious.
Carrying the idea of light being your friend on a little further- The puppy is cute as it stands but it if was just a little brighter and the background was a little darker the puppy would stand out. When I look at the image my eye wanders back to something laying on the floor. If I remember right it's pink or close to it. That's not the important part of the image but I remember it... see how it works? With a little contrast mask you could bring the puppy up and the background down but you can also accomplish the same with a little bit of light. It doesn't even have to be flash. A lamp or something like it that lights up the dog (and that's all) could help. The proper use of fill flash, by the way, is an art in and of itself. PS- I realize that it was a candid shot and sometimes it is what it is. I'm just using the image as an example.