ながす => glance through N2
Demonstrate by example
さすがに => understandably N2
Base, base
を契機に => as a good opportunity/chance to N2
Expected
のが~です => to be N4
を[機「き」]に => Use A as an opportunity N1
Time, Situation
...たいんですが => want N4
How to say the beginning
がわかります => Capacity N5
Ability
さすがの...も => even ~also N2
The highest (comparative) level
んですが => opening the story N4
さすが => as one would expect N2
Evaluate
... のが...です => Highlight interests and skills N4
Abilities, interests
がする => to smell; hear; or taste N4