It's never a good idea to boast your own skills, even when it's clearly warranted. Humility goes a long way.
I remember the architect of MoMA (which just underwent a grand remodeling) said in an interview that he thinks his structure is plain and not noteworthy--just a box with an inner garden. This is stated despite widely acclaimed praises from critics world-wide.
Some of the best mappers I know are extremely humble. They proclaim that their maps need a lot of work and is imperfect, and yet everyone who ran their maps exclaim that these are really true works of art.
Sometimes being a bit humble and understated can make one even greater than he/she already is. For a true expert, the praises come from others, not him/herself.