Hi!
After a few research on the internet I've found inspiration to paint watery bases. Here's the result:
[/url]
[/url]
Quick tuto: paint your base normally. Add 4-5 layers of shade (here I used Citadel Biel-Tan Green) covering a larger area each time, and beggining with the deepest water. Varsnish your mini (I use matt varnish). Finally brush gloss varnish on the water and on a small band sticked to the water.