Tutorials by request, done in PS CS and likely translateable to PSP.
01.
Cropped base from caps by
dj43.
02.
Duplicate base twice, set to Screen 100%.
03.
New layer filled with dark blue (I used #011435) set to Exclusion 100%.
04.
Duplicate the base and drag it up to the top; set to Screen 100%.
05.
New layer filled with light blue (I used #CCE1F9) set to Color Burn 100%.
06.
Erase the blue parts off of faces and skin.
07.
New layer filled with yellowish-tan (I used #ECDEC2), set to Color Burn, 60% opacity.
08.
Create a new layer and stamp a copy of everything you've done so far in the new layer by pressing CTRL+ALT+SHIFT+E. Duplicate that layer and set the top one to Soft Light. Using your smudge tool and a setting of soft round brush 100px, smudge this top layer a little to give it a sort of "glowy" look. This is optional, and totally up to you based on the cap and how it looks after smudging.
09.
Add text - "This Year's Love" is Jenkins v2.0, 17px with a drop shadow (#5262AC set to Multiply, 100% opacity, 30 degree angle, distance: 1, spread: 0, size: 1). Rotate the text to a slight angle.
10.
Type in some nonsensical lines for tiny text. I don't know the settings for these because I rasterized the layer to rotate it slightly, but it's probably Times New Roman set to 1 or 2 pt.
11.
Create a new layer under the text and tiny text, but above the soft light layer. Using a soft-edged round brush (this one is around 17px), draw a smudge underneath the text to make it stand out better. I used #222180, and set it to Multiply, 50%. You are FINISHED.
01.
Cropped base from caps by
dj43.
02.
Duplicate base three times, set all duplicate layers to Screen 100%.
03.
New layer filled with dark blue (I used #011435) set to Exclusion 100%.
04.
Duplicate the base and drag it up to the top; set to Screen 100%.
05.
New layer filled with light blue (I used #C9DBEB) set to Color Burn 100%.
06.
Erase the blue parts off of faces and skin.
07.
Duplicate the blue color burn layer twice.
08.
Create a new layer and stamp a copy of everything you've done so far in the new layer by pressing CTRL+ALT+SHIFT+E. Duplicate that layer and set the top one to Soft Light. Sharpen and fade sharpen this layer as needed.