Yep. Looks real good. I know what you mean about the cap though. If I remember correctly from the last time I saw a glue bottle like that, what I'd do is to make the cap from a tapered disc having 2x the number of points as ridges on the physical cap.
In extruding it, you'll probably have a couple or three extents to get the vertical curvature, so I'd simply select the inner every other point at the base, and shift them in slightly to give something like I've got here:
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