Welcome to Newanz second tutorial.
I will not give you a whole chat about the tutorial and get started right away. It's not a very long tutorial, but you will have a nice result!
See the final result
here.
Step 1 - Making the PSD file
Create a new file,
File > New. I gave it a width and height of 500pixels and a transparant background.
Now let's start filling this layer with a white background color. Go to
Edit > Fill, choose white in the dropdown box and press ok.
Of course of course you can take a white background when you make the psd file in the first place, but as I noticed you will not be able to edit it afterwards. So I fill my background seperatly.
Step 2 - Creating the shape
Create a new layer
Layer > New > Layer.
After this we will make the shape for the button. Grab the
rectangular marquee tool and set it to a fixed size of 6/10 of the entire image for width and height. In this case 300pixels for both. Now go to your psd project and put the selection in the middle of this. Then fill it
Edit > Fill with the color black. Deselect the selection
Ctrl + D.
Now we will give it a better shape then the simple rectangle. Go to
Filter > Disort > Spherize and give it the following settings.
Now we have the basic shape of the button unless you want to change that, but that's up to you.
Step 3 - Adding a style
For the style of the main shape go to the
Blending Options. The first effect to add will be
Drop Shadow. This will give the shape a shadow effect. Add the following settings:
Drop Shadow
Bevel and Emboss
Satin
Color: #000000
Gradient Overlay
Color left: #476491
Color right: #FFFFFF
Stroke
Color: #000000
I used a stroke of 2px, since when working with bigger images a 2px stroke is better to see.

That's all settings for the button so far, all the next effects will be set in different layers.
Step 4 - White overlay
To create a glossy like effect we need to create a shape first. Make a new layer. Go to your layer pallet and select the main shape layer by left clicking and holding
Ctrl. Then select the
Elliptical Marque Tool and then choose the
substract from selection method.

Substract the shape needed to get kind of like the shape in the image below.

Fill this shape with the color white and set the opacity to around 25% to 30%.
Then deselect the shape with
Ctrl + D.
Step 5 - Last effects
Now to give it a nice finnishing touch.
We will begin making a new layer. Then go to your
layer pallet and make sure you have the new layer between your mainshape and white overlay. Then in the layer pallet
left click, while holding the
Ctrl button, on the shape layer. Now make sure you got your fore- and background color set correctly. Use forecolor: black and background color white. Now you will still have your shape selected. Go to
Filter > Render > Clouds. And after that go to
Filter > Render > Different Clouds. I would go for a evenly spread black and white different clouds filter, see image below.

Deselect your selection with
Ctrl + D. Now to get the effect right you need to go to
Filter > Artistic > Cutout This filter will minimize your clouds layer to a few colors and shapes.
I used these settings in my button, see image below.
I did this so it has a few clean looking shapes with sharp edges.

Now press OK and the filter will be set. Now you will get the filter layer as the most visible layer. Now we have worked on that layer with the main shape so we want to show it. We will change the Blending to
Color Dodge and an opacity to 75%.
Finnish
Now we have our Shiny Button. It's not a very long tutorial, but we got it! You might want to add some text, I would recommend some silver/white text.
My end result is avaliable here.