
Ever wanted to ask how I can make those graphics?
You will need the following tools
Paint.NET
Hawkynt's 2D - Image Filter Library
Add the .dll file you get on the Effects folder where you have Paint.NET installed.
Let's load a random graphic, for example npc-4.gif.
Now go to Image -> Resize
A window like the one below will appear.

Click By Percentage: and set it's value to 50.
Once you're done with that, go to Image -> Canvas Size...
A window like the one below will appear.

Click on By percentage: and set it's value to 200. Make sure the anchor is set on Top Left.
Next, go to Effects -> Tools -> 2D Image Filter
If 2D Image Filter doesn't appear. Add the .dll given on the second link.
A window like this one will appear.

Select XBR2x and voila. You have successfully converted your image.
