I agree with alilofeverything, liquid definitely needs practice.

Silly me started out using liquid but couldn't draw it nicely, so for the first couple of months (I hardly use makeup) I had to get friends to draw for me.

You get the hang of it quite fast though, and I'm happy to say that I'm sorta good at using liquid d.

However, since I've only used pencil once, I totally suck at that.
Pencil won't come out as crisp as liquid, so if you want drama go for liquid but if you want a gentler, everyday look, pencil it is.