It is understandable, but you are missing a principal component of editing. Sure you need to be able to use the program, but you need to also be able to look carefully at the original and determine what if anything needs to be done and then after you have edited, the question should be: "Have I improved the image?"
In many of the above, the answer unfortunately is No. In the orangotang the area around the eyes needed to be selectively brightened. Instead you seemed to have gone a little heavy with the saturation and contrast making the area around the eyes even darker. The mushroom edit shows clearly that your focus was slightly off and that is not what you wanted to show. With the blue flower you should have worked on the background distractions perhaps using one of several blurring options. With the white flower you changed the colour and washed out some of the detail and that is definitely not a positive change. With the daisy you should have first taken the stain off the front petal and then worked on the background.
To put this all in perspective, you are still a beginner in this area and it is good that you are experimenting and looking for feedback. I have been doing this for a very long time.
skieur