@Need4Weed when I made E-liquid I found it to be easier to make dry ice kief with your weed or trim....then infuse the kief into the VG. Its WAY easier than using plant material...and a more complete extraction...plus, you can just smoke the kief if you want also.
Once the VG is made, I just mix in a flavoring made with PG, and a tiny bit of distilled water to thin it out...BAM! You'll have a vapeable liquid you can use in public without anyone realizing.

Hope it helps buddy