Make connections between sources. Do they take similar approaches? Do they build upon one another? Do they disagree?
What sort of evidence do they use? What themes do they explore?
Do you agree or disagree with the sources? Do any support your claims? Do any challenge or extend your ideas?
They Say, I Say by Gerald Graff and Cathy Birkenstein provides templates to frame the many “moves” expert writers make in academic writing. See the index for a complete list of templates. Their templates for synthesizing sources are especially helpful and will give you a format for:
Introducing ongoing debates
Agreeing and/or disagreeing with sources
Making concessions while still standing your ground
Introducing your point of view