I fixed the link, something happened when I submitted my post...
Also the Photoshop trial is too large for me to download on my current connection (Satellite). In the tutorial I linked to, in order to create those effects I need a blending tool or a full featured blending tool/option as shown in the Photoshop diagrams.
I've been unable to locate a plugin for Paint.Net that can handle this, and create these effects. I came here to seek a solution, if there is no plugin to accomplish this, maybe there might be another way to achieve those effects.