When we are in heaven, will we become perfect?
God is perfect. In heaven, we will be perfect too; because there will be no more sin. By living a life of faith and repentance; and keeping God's commandments while we are here on earth, we will be complete, perfect and free to enjoy the eternal life in heaven with our Lord, the angels, and the saints. Our perfection is relative to God's perfection which is absolute.
"And God will wipe away every tear from their eyes; there shall be no more death, nor sorrow, nor crying. There shall be no more pain, for the former things have passed away" (Revelation 21:4).