"It feels good we won this test and finally got a win. Our ranking in Test cricket remains good and that is a relief. I now want concentrate on building a strong one-day squad," the former Pakistan captain said.
Pakistan by beating Bangladesh which is ranked ninth in the ICC test rankings retained its third position.
The defeat was Bangladesh's 71st in 90 Tests.
"Our performance was truly 100 percent professional in this test and I think our bowlers really exploited the conditions well," he told Pakistani media in Mirpur.
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"We were aware off the criticism back home after the first Test where Bangladesh batted really well in the second innings on a slow and placid pitch. We knew it was important for Pakistan cricket to end the tour with a big win."
The former fast bowler said he was aware of what was being said about his performance and respected the opinion of critics.
"But the truth is I now try to just focus on my work and do my best and ignore what is said about me or the team."
Khan apparently also had a separate one to one meeting with Waqar to discuss future plans.
"Our main task is now to start preparing a good one-day side it is a format we have struggled in recent times and with so many ODIs and T20s being played now we need to set things right.