Create a new .PSD file (Width: 1000px, Height: 1000px, Resolution: 72px/inch).
Click twice on the Background to turn it into an editable layer.
Set Foreground Color to #15515a and Foreground Color to #02131e.
Select Gradient Tool, Foreground to Background Gradient type, Linear, and draw the Gradient from top to bottom of your canvas.
Right click on your background layer and from the fly-out menu select Blending Options, then choose Bevel and Emboss. Change Bevel and Emboss Settings like this:
Style: Inner Bevel; Technique: Smooth; Depth: 100%; Direction: Up; Size: 250px; Soften: 0px;
Angle: 120 degrees; Use Global Light: checked; Altitude: 30 degrees; Gloss Contour: Linear;
Anti-Aliased: unchecked; Highlight Mode: Screen; Highlight Color: # ff5558;
Shadow Mode: Multiply; Shadow Color: # ff44bf
Still dont’t close the Layer Style dialog box as we are going to apply another one of the Blend Modes. Check Inner Glow option and change its settings as following:
Blend Mode: Screen; Opacity: 75%; Noise: 0%; Color: 5a402f; Technique: Softer; Source: Edge; Choke: 0%;
Size: 250px; Contour: Cove-Shallow; Anti-aliased: unchecked; Range: 100%; Jitter: 96%
Duplicate this first layer. We need to keep the original layer intact in case something gets wrong during the further manipulations.
While the duplicate is selected, go to Filter, Texture, Texturizer and move to the next STEP 4 to see the settings applied. Of course, they are optional and if you are not satisfied with the result, change them with your own settings.
In Texturizer window opened, insert these settings:
Texture: Burlap (select from the drop-down menu);
Scaling: 200%; Relief: 17; Light: Bottom Right (choose from the drop-down menu);
Leave Invert option unchecked and press OK.
No actions to perform in this step. Only see the screenshot given. Your result should resemble mine texture if you have used the same settings above. If you choose, it could be the final step for you. If interested to add some color, continue with the following 2 steps. No bother, they are short and easy.
Create a new layer on top of your Layers Palette. Select Gradient Tool, choose Transparent Rainbow Gradient, Radial type. Draw the gradient from the middle to bottom of your canvas.
Change Blend Mode of your Radial Rainbow Gradient Layer to Overlay and reduce Opacity to 20%.
The End. Your texture is ready. If you prefer different colors combo, simply change the gradient or paint with brushes of various colours and of course, play with Opacity settings.
Good luck and have fun!