At both Pentecost and Gentecost, the two premier accounts in Scripture of apostolic evangelism, Peter testified to Jesus’ miracles:
Act 2:22 ¶ Ye men of Israel, hear these words; Jesus of Nazareth, a man approved of God among you by miracles and wonders and signs, which God did by him in the midst of you, as ye yourselves also know:
Act 10:38 How God anointed Jesus of Nazareth with the Holy Ghost and with power: who went about doing good, and healing all that were oppressed of the devil; for God was with him.
His testimony on both occasions highlights the work of God the Father in Jesus’ doing the miracles that He did: “miracles and wonders and signs, which God did by him”; “healing all that were oppressed of the devil; for God was with him.”
Peter’s example of doing so with both Jews and Gentiles strongly suggests to me that we should likewise emphasis the work of God the Father in our evangelistic testimony to Jesus’ miracles.