Make a copy of the new button’s layer and apply the
Free Transform solution to place the copy the same way shown below, changing the parameters for the copy’s layers:
Blending Options>Gradient Overlay 
Gradient’s parameters: 
Blending Options>Stroke 
Gradient’s parameters: 
Insert on this stage the buttons’ inscriptions, keeping the same demands shown below:
INFO
START
Choose out the indicated here parameters for the START word:
Blending Options>Outer Glow 
Finished!
View full size
here.
