Rodolfo Paiz
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Wow, that's a lot of work being done in post. And I think, after seeing the "before" pictures in slightly higher resolution, that your post-processing work is really, really good. The photography does need work, though, and is making your life much harder than it needs to be.
So that everyone can share in the conversation in the process, please post here what you told me in PM about where/when/how you're taking the pictures. And please post the "before" shot of the blue pedal... it's eye-opening.
I suggest an exercise, which I think you'll find illuminating (pardon the pun). Go back out to the picnic table, set up your tripod, and lock it in place. Set your aperture so that you have sufficient depth-of-field to get everything in focus from the top of the buttons to the text on the surface, and focus very carefully to ensure that everything you want in focus, is in focus. I'd guess that you're shooting from about 18 inches away, which means f/11 will give you about 1.25 inches of DOF on that lens and body.
Part 1 of the exercise:
Now that you've got everything set up, make sure that everything is on manual so that nothing changes except what you change. Take a series of shots, changing only the shutter speed. The first should be at 1/40, your favorite shutter speed to date. Double the exposure time (i.e. increase the exposure by one stop) for each subsequent shot... 1/20, 1/10, 1/5, 1/2, 1 second, 2, 4, and so on until you're getting an almost-white exposure. My first and slightly random guess is that you'll finally stop at either 4 or 8 seconds, and that you'll get a nice, bright, cleanly-exposed image somewhere around a half-second.
(By the way, I'm not telling you this to show off... I'm making some educated guesses for my own benefit, and I'm very curious to know later how close or how far from spot-on those guesses end up being. Could be way off, I don't know.)
Part 2 of the exercise:
Try doing a little post (5 minutes or so) on two or three of the images. Especially try working on the ones that seem either perfectly exposed (as though they were taking in brightly-lit conditions), or somewhat overexposed but with no blown highlights. You should find this whole exercise to teach you a lot about getting the right exposure for what you want, with a very low cost in time and effort.
At the end, of course, you'll end up editing only one image, whichever you decide is the best. But I think you'll find that the detail you keep is vastly better, and your work much easier, if you start with the proper exposure in-camera first. In particular, I'll remind you that accurate exposure is ideal, but if you're going to be wrong, you get much lower noise and better detail if you overexpose slightly (without blowing highlights) and then turn it down rather than underexposing and pushing up the light levels in post.
Note that I'm not clear about your level of knowledge in photography, so I'm walking a fine line between reminding you (or letting you know) about some of the basics, without telling you how to add 2 + 2. Speak up if you need anything explained, or if we can skip some of the explanations and get more in-depth.
See you after the next round. 
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