This is a pretty easy flavour to mix. 10% at your intended ratio. Add sweetener to taste. Go creative and add other flavour notes.
Just a side note: There's no true guide to flavouring percentages as different ppl like different flavouring strengths. Btw, it helps to look up TPA's site and look at
reviews posted on the flavouring you're mixing for a rough idea. Again, no hard and fast rules, as it's more art than science.