This was done is PSP 9 but could be adapted to other versions.

The object of this tutorial is to learn to join 2 different images without any
juncture lines showing.

You will need:
PSP
2 Graphics (or use mine)
a Mask (or use mine)

Supplies Here

1 - Choose your graphics that are similar in theme and color.  Open graphics in PSP.
Open Mask (2hootyedgemask.gif) in PSP.  Minimize for later use.

2 - Duplicate (Shift D) both images and close the originals.

3 - Images/Resize both images so they are the same height, not more than 350.

4 - Add the widths of both images and times 2. I try and keep the total around 1024 so everyone can see both images.

5 - Open a New Image the width you got above x height of your images.

6 - Edit/Copy/Paste first graphic as selection onto background image.
Move graphic to the left edge.

7 - Edit/Copy/Paste second graphic as selection onto background image.
Move graphic Butting against the first image.

8 - If a line shows use your air brush or clone brush to blend the junction.

9 - Another way I use to blend the junction is to outline part of the image of one and
copy, paste and mirror.  Then move this piece to cover the line.

                                                                                      Finished Look

10 - Layers/Duplicate Layer.  Images/Mirror

11 - Line up center so it blends.  You may need to used your air brush again.

12 - Merge visible.

13 - Layers/New mask from image.  Find your mask in the drop down menu.
Source Luminance - Invert checked
OK

14 - Layers/Merge/Group

15 - Effects/3D/Drop Shadow
Horizontal and Vertical both at 2 - Opacity 65 - Blur 7
Shadow on new layer NOT checked.

16 - Images/Resize Canvas - Width the same as background - Height 800

17 - With your dropper, choose a color from your background as foreground.

18 - Minimize background.

19 - New image 200 x 200.  Fill with your chosen color.

20 - Effects/Texture Effects/Textures/Asphalt or the texture of your choice.

21 - Effects/Image Effects/Seamless Tiling - Setting Default

22 - In the Material  Pallette change color to pattern and choose the pattern
you just created.

23 - Maximize background.

24 - Create a new raster layer and fill with your pattern.

25 - Merge All

26 - Save as a jpg
File/Export/Jpeg Optimizer.  Compression 25.

27 - Assemble in Letter Creator.  I like to tile so the text does not scroll.

Link to: http://www.irish-cream.com/GazeboVeranda.html

Get Jo's Letter Here

Thanks to Hobo Testers
Teddie, Dee, jan, Starfire, Fran, Darlene, Kimmy, Debbi, Brenda, Faith