Granted, the Bible does not outline exact procedures for a Christian wedding. That is understandable because customs and even legal requirements vary according to location and era.
يَلْمُسُ ٱلْمَسِيحِيُّونَ لَمْسَ ٱلْيَدِ كَمْ هِيَ مُفِيدَةٌ نَصِيحَةُ كَلِمَةِ ٱللهِ ٱلْمُوحَى بِهَا حِينَ يَكُونُ ٱلرَّجُلُ وَٱلْمَرْأَةُ عَازِمَيْنِ عَلَى ٱلزَّوَاجِ .‏