BoltBait

You could always use my Effects > Paste > From file... plugin. It has many tile options.

If you are trying to design a real rubber stamp, you are really lost. If, on the other hand, are here to make your image look like it was stamped by a rubber stamp, try this plugin: https://forums.getpaint.net/topic/111225-rubber-stamp-v10-april-15-2017/

I picked up a hitchhiker the other day. He seemed fine. After a couple minutes, he thanked me for picking him up and then asked me if I was afraid that he was a serial killer. I told him, “No. The odds of two serial killers being in the same car at the same time was incredibly small.”

In Paint.NET, all layers are the same size. If you want to resize the contents of one layer, independently, press Ctrl+A to select the whole layer* and use the handles to resize the content. Press and hold the Shift key during the resize to maintain the ratio. *It is not necessary to select the entire layer. I just gave that as a simple example.

This issue has been around forever. Here is a thread from 2016 (mentioning a thread from 2010) about the issue: https://forums.getpaint.net/topic/109003-can-the-circle-tool-be-improved/ Anyway... Here is one solution: https://forums.getpaint.net/topic/113602-single-pixel-width-circle-solution/?tab=comments#comment-552407 Or, you could draw a circle and select the left half of the circle, copy it, paste it and use my plugin Effects > Flip Horizontal to mirror image the half, and position it for use.

I'm going to guess that the resize worked just fine. It just didn't LOOK like the resize did anything because after the resize your zoom level changed. Check the lower right corner of your Paint.NET window to see the zoom level before and after the resize to see if it changed.

Finally, a t-shirt for sports fans like me... Car stuff...

More from the "life as a programmer" file...

Well, now that you're here, you might as well download Paint.NET and see if you like it. It is free. Click the link in the upper right corner of this page to get started: https://www.dotpdn.com/downloads/pdn.html

...or, you could simply switch to a plugin in my pack called Effects > Object > Paste Alpha...

How to use the line tool to draw a straight line: To constrain to a certain regular angle, use the shift key while drawing your line.