Here you can get the plugin pack for Paint.NET made by pyrochild.

Link: http://forums.getpaint.net/index.php?/topic/7291-pyrochild-plugins-2014-2-08/

This plugin pack includes:

pyrochild.effects.REQUIRED
Not a plugin, this file contains resources that are shared between multiple plugins.
Must be installed regardless of which other plugins are installed.

Adjustments > Curves+ 3.0
Like Paint.NET's own Curves adjustment, but better.

Effects > Render > Borders N' Shapes 1.8
Draw rectangles, ellipses, arcs, and pies, all with configurable styles like solid, dashed and dotted.

Effects > Render > Gradient Bars 3.0
Bars. Bars of gradients. Gradient bars.

Effects > Photo > Film 2.0
Make your photo look more like film, with adjustable settings like grain and Hollywood-style zoom factor.

Effects > Distort > Jitter 3.0
Shake up your image.

Effects > Object > Outline Object 2.6
Outline text, add a glow to a lightsaber, or put a border around a picture or drawing.

Effects > Distort > Stitch 1.0
Makes your photo look stitched.

Effects > Advanced > ScriptLab 2.6
Automate repetitive tasks in Paint.NET.

Adjustments > Gradient Mapping 3.0
Make multicolored gradients, or recolor an image.

Effects > Artistic > Splatter 1.6
Make a Jackson Pollock style splatter-paintings.

Effects > Blurs > Pixelate+ 1.2
Like Paint.NET's Pixelate effect, but with better results and adjustable width and height. Also known as Mosaic.

Adjustments > Color Match 1.1
Improve your photography with classical art. Or make it worse. Makes your photo follow another's color scheme.

Effects > Random Effect 1.3
Lacking inspiration? Use this to fire up a random effect with random settings.

Effects > Render > Random Shape Fill 1.5
Draws tons of shapes - from circles to hearts to stars - with various color settings, transparency, etc.

Effects > Tools > Smudge 3.0
Does this need any more explanation than the name? SMUDGE!

Effects > Object > Trail 1.0
Gives an object a trail, like the cursor trails on old laptops.

Effects > Blurs > Gradient Blocks 1.0
Blurs an image into 4-point gradients.

Effects > Tools > Twist 1.0
Twisting tool.


How to install
Step 1: Download the zip file from the link above

Step 2: Open the zip file.

Step 3: drag all of the files into your Paint.NET\Effects folder. (C:\Program Files\paint.net\Effects)

lmao.
I have Paint.net but i find it Easier to use GIMP and PhotoShop..
lol..
~Rain..

Stickied several threads, including this one. It'd seem that the graphic design area might actually get more active now.

I've updated the original post. I added better instructions and a little bit of color for better readability. I also checked to make sure the link was still valid.