Photo retouch is a necessary step in photography to remove unwanted objects in the photos, enhance brightness and contrast or other reasons. You can enhance your photo in Adobe Lightroom and Adobe Photoshop.
Check out the adobe site.
There are times you don’t have a tripod with you. You might not get the perfect setting for light exposure. This photo has washed look and doesn’t look special. I added the dramatic color tone in this shot. Now it looks more interesting!
Sports shots are very interesting! You need to catch the dynamic motion in a still. I like spreading dust on the foot and movement of hands and feet all caught as frozen in a static. I tried bleached look with high contrast and less saturated color tone. It needed some removing of logos on the shoe and text on t-shirts. There is no right or wrong answer when it comes to how you want to express the mood. It is more personal choice, but you should like it what you did.
Marina is an interesting place to take photos. It has nice water views, yachts and boats that many people want to take photos on that theme. Depending on the composite, the photo could have very cluttered look. All those boats always have lots of strings and ropes tied. It creates distractions. Try to focus on part of the scene or small objects instead of trying to get entire boats and it still can tell where this place is. For this shot, I wanted to be a vintage look