Ok be my guest ron, give 'em a study and see what you can do.

Most of these images/effects are not real complex. Especially the 3D interface stuff. Those didn't take long to make. Just long to think through. Don't overthink the creation process.
In case you're wondering too ron... the 'special' characteristic i'm speaking of is reflections and surface imperfections/details. Give those some thought.
(
i'll explain reflections a little at the bottom of the post)
Patrick i do nothing special in creating those types of images. About the most work i actually do is to study real world objects like those and figure out what makes them look the way they do. Albeit i'll admit i've been 'learning' how to make images like that for several years now. It's taken a long time to get them to come out looking 'natural'. Some still aren't where i'd like them to be. But i'll keep practising.
One REAL important 'trick' to these kinds of images too i must say... is when studying real objects, try to see specifically what makes the object look like the object it is. Get what i mean? A simple example of this would be to look at a coffee mug and try to understand WHY it looks like a coffee mug. This isn't to teach one to become real 'deep'

... it helps one to become proficient in studying details.
And a second 'trick' to these images is to study a real object and tear it down visually into layers. i.e. going from the outermost surface to the innermost characteristics... highlights/reflections/texture/imperfections/etc etc etc... Get what i mean? To me THE most crucial aspect is to study imperfections. Most often, over the past 8yrs or so, i've come to notice that the most often made mistake is for folks to create images that are very shallow in detail and usually way to perfect/mechanical looking. If you can train your eyes to detect these things (
some being very subtle), then you'll be able to apply this level of detail to your graphics.
Now about the reflections...
Most often people will make a mistake when choosing a 'scene' to use as their reflection on an object. Mainly because they're not really thinking about what type of 'scene' should be most appropriate to their situation. Just grabbing a photo of some indoor/outdoor scenery and slapping it on, turning down the Opacity and Spherizing it, won't make it believable to the eyes. Our eyes are much to 'experienced' to be fooled that easy.
On-the-other-hand...
A lot of the time i won't choose a photo based on it's appropriateness to my scene/image. I'll apply a photo that has specific lighting in it, because i know it'll fit well into the lighting in my scene/image. People really underestimate how lighting/shadows can work to make a believeable scene/image. This is something that'll take some forethought and a bit of experience to do, but it's not rocket science. So it's doable without too much learnin'.
Here's a simple example...
Say you're creating a coffee mug, sitting on a table at a 3/4 view from above.
All other details aside, what most important in this situation is to 1) find a photo of a scene that might actually be a reflection on a REAL coffee mug, in a REAL life situation; and 2) be weary of the angle you're on when viewing the mug. Sometimes it can be difficult to apply the reflection photo to your object at some odd angles, but getting it as close as you can or exact will make a world of difference toward fooling the eyes.
Do up some spheres or other objects and post your results in a new thread if you wish. I'll be happy to provide any help i can toward helping you understand how to apply these types of details to them.
Hpe that helps. [honesty]