You can add your own personal stickers to WhatsApp messenger by using this app.
( This app is one of WAStickerApps. )

How to use.
1. Make a "Sticker Pack".
2. Add your own photos ( 3 - 30 images/pack )
3. Tap the "Add to WhatsApp" button.

The size of stamps must be just 512 x 512.
This app resize your images automatically.

When you need to erase the background or you need to combine several images,
our "Background Eraser" app and "PhotoLayers" app would be helpful.