Ho, been there, done that: <a href="https:&#x2F;&#x2F;biz.twitter.com&#x2F;en-gb&#x2F;write-good-tweets" rel="nofollow">https:&#x2F;&#x2F;biz.twitter.com&#x2F;en-gb&#x2F;write-good-tweets</a>, although that one does not focus on restricting word&#x2F;character count.