Using PIXLR to superimpose one photo on another
In many group photos there is always one person missing - the one who took the photo! What a pity and how unjust it is for him! Luckily there are a number of photo editors to help us include the photographer in the group. Of course you can use Gimp or Photoshop for this but if you are looking for something simple that can do the same job then Pixlr is the answer.
You can download the program from its website here. There is no hassle, just sign in with your Facebook account and you will be able to get started.
Once logged in click on "Launch Web App" below it.
Now comes the interesting part. Go to File - Open Image and choose the main photo on which you want to superimpose the smaller picture you have just created. The photo below is the main photo (before the superimposition).
Now select the "Layer" menu and choose "Open Image as Layer." Select and open the photo with the transparent background that you had saved as a .png file earlier.
When you do this you will see the first photo appearing somewhere in the middle of the second photo (see screenshot below).
Now click the "Move" tool (it's at the top of the tools menu) and looks like the + sign. If you put your mouse on the .png image now, you will be able to drag it to wherever you want it to be on the second photo. In this example I dragged it to the bottom right-hand corner.
And that's it. Go to File - Save. You can see the result below.
But you can also create lots of funny photos with this superimposition stuff. So have fun!
P/S: It so happens that my superimposed picture is of the same size as the main one. If that is not the case you can resize it by going to "Edit" and choosing "Free Transform" from there.