Just thought that I would add this to my collections of post. Someone down the line may find it useful because it took me a long search to find it myself ......
Paint.Net v.3.5.10
To use this program to set transparent areas in your picture.
To get new project to work on
1)Click file
2)Click new
3)In the box that comes up set width/height
4)Click OK
I enlarge the work area to 3200% so I can see what I am working with
After the picture is in the framework you have chosen to use (16 pixels x 16 pixels)
1)Click on wand ( 4th tool in tool bar)
2)This should bring up a new bar which has a section called “Tolerance” .
Set the tolerance to 25%
3)Take your wand and touch one “white” block section of your picture and it should turn lite blue.
4)Click on edit
5)Click on cut and the section you cut out should now have checkerboar squares in it except where your picture is. Continue this till all white squares are turned to checkerboard.
6)squares.
To save a file
1)Click file
2)Click save as
3)Put in file name and where you would like to save it ( I put mine on the desktop so I can find it easier). Yes, remember to save it as a “.png” file
4) A Save Configuration box comes up just click OK
Now I put the picture in the plant section so it came out looking like grass and when I put it in the block section (not shown) it came out with the picture on all 6 sides. Any way here it is for hat use it can be
.
Paint.Net v.3.5.10
To use this program to set transparent areas in your picture.
To get new project to work on
1)Click file
2)Click new
3)In the box that comes up set width/height
4)Click OK
I enlarge the work area to 3200% so I can see what I am working with
After the picture is in the framework you have chosen to use (16 pixels x 16 pixels)
1)Click on wand ( 4th tool in tool bar)
2)This should bring up a new bar which has a section called “Tolerance” .
Set the tolerance to 25%
3)Take your wand and touch one “white” block section of your picture and it should turn lite blue.
4)Click on edit
5)Click on cut and the section you cut out should now have checkerboar squares in it except where your picture is. Continue this till all white squares are turned to checkerboard.
6)squares.
To save a file
1)Click file
2)Click save as
3)Put in file name and where you would like to save it ( I put mine on the desktop so I can find it easier). Yes, remember to save it as a “.png” file
4) A Save Configuration box comes up just click OK
Now I put the picture in the plant section so it came out looking like grass and when I put it in the block section (not shown) it came out with the picture on all 6 sides. Any way here it is for hat use it can be
. 
