Tutorial #3
how to blend (method one)
Step One:
This is what i call the "eraser" method. Anyways first you need pictures.
I used these three. click.
I pasted them into the a 700 px X 500 px canvas. Rearrange them to about
where you want them to go. example.
Step Two:
Start with the top layer (layer three) pick a eraser, a larger one (maybe 150px in diameter, hardness 0%)
Start erasing the edges. example.
Step Three:
Move on to the next layer, start erasing again. example.
Step Four:
I didnt like how layer 3 wasn't really that blended in nicely, so i redid it. i used a bigger brush (420 px) and erased.
example.
Step Five:
Still not satisfied with it, decided to cheat now. I created a new layer (4) took by paint brush (420 px) and just made some spots
to cover it up. Then, erased some excess parts off. example.
Step Six:
Pretty much finished so I flattened it (Layer > Flatten Image). Then I duplicated it and set it to soft light.
example.
It's done so I flatten it agian.
FINIAL OUTCOME
after final toches (textures/brushes/patterns/text) Click.
again, it's just an outline to give you the general idea. you do not have to use the same brush sizes. 
again, it's just an outline to give you the general idea. you do not have to use the same brush sizes.