this is my example,  can download any copy from  here

create a new image of the size of your desktop, 1024 x 768 or 1280 x 800 etc.

write a text of your election. and copy paste if need. try to cover your complete canvas.

put a background color at election.

now, insert a rectangle with a gradient from black to black (or a dark color combined with your design) and change to alpha 0 the inside .

put inside your design and change the style of this layer at overlay.

can put some decorations like texts or images.

be creative.