6.1 Again go to 'Filter' and you'll find 'Pixelate' as you scroll towards the right.
Click on 'Pixelate Crystalize'.
Change the parameters according to your suitability.
6.2 Now go to 'Style' in Filters.
After clicking on 'Waterdrop (Rounded)' you'll see something like the image above if you're having the default parameters.
Now increase the flatness and the distance as well if required.