This proverb, relates to things that are ruined because of always adding too much. I am always itching to change things on my blog, but a little scared to change things in case you visitors don't come back, or if you do come back that you won't recognise the site.
Don't overdo things, and the Chinese have the perfect proverb here:
huà shé tiān zú
Draw a snake with legs
Meaning: To ruin the effect by adding too much.
To overdo it