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I use PSP8 and it's completely translatable. (:
My first post;
First find your base, I'm using this one I cropped down.
Duplicate it and set it to soft light @ 100%
Create a new raster layer and fill it with this colour, #300B5D. Set to exclusion @ 100%.
Duplicate your base and drag to the top. Set it to darken @ 100%.
And you're done!
Post your creations & I hope this helps.
Don't forget this is a guideline, mess around with settings and colours. (:
Other Examples: