Step 1
Open a new image in PSP, of any size, with a white background.
Step 2
Click , and if the ‘Tool Options’ box isn’t up, right click and choose ‘Tool Options’.
Step 3.
Make sure you select ‘Neon Green’, like in the picture below:
4. Draw over your image. Next go to ‘Effects’ > ‘Geometric Effects’ > ‘Ripple’, and change your settings to these:
Step 5
Finally, go to ‘Colours’ > ‘Colourise’ and change the colour of your water to blue, or whatever colour you prefer.