First of all go to the playstore of android phone and in the top searchbox type "Kika Emoji Keyborad" You will see a list of apps in dropdown...
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Now click on the app named as "Emoji Keyboard-Cute Emoticon"...
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After clicking you will see a screen as shown below. Click on Install button to start installation in your android phone...
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After clicking on install button, your app will start downloading just like below image..
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Now staying on the same screen you will see a button "Open" Click on it to open the app...
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Or you can go out of playstore and in your smartphone click on kika app icon to open it......
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Enjoy it......... :)