Migrating Share point server to new vm

Hi Techs,

We are having two instance of SharePoint server 2010, one is in production and one is test. we need to migrate both and SQL server 2008 r2 to new AD site in same domain.

Production server i having SQL server instance on separate VM.

What would be the best practice to migrate all 3 to new VMs and different site.

Thanks for your advise.

Amrit