Moussa Diaby and Ezri Konsa struck the goals on Saturday.
Emery said of Konsa: "He's playing now with the national team and for the first time in Europe .These are very good experiences he is taking. I think he has been more consistent and more demanding of himself.
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"We have to push him because he has qualities that are more what he is showing. We have to continue to work with him defensively and on his positioning. And playing as the third man as a centre-back.
"He scored one goal today which was fantastic as well for him and the team so we need to carry on his process as a player."
Ollie Watkins was changed at halftime with a hamstring injury and Emery added: "I don't know now but tomorrow we will check in."