If a team is able to ship a product day after day, with increased quality and increased velocity this is a clear sign, at least for Ricardo that he is doing a good job as Scrum Master.
About Ricardo Fiel
Ricardo has 12 years experience in software teams, He had multiple roles from developer to architect to CTO, working in both startups and global corporations. He led teams from 4 to 30 members. Currently, he leads product development (SaaS) teams at Rupeal. You can find Ricardo in linkedin or twitter.