Acne and Excess heat on right side of abdomen

Applied by a practitioner you would undergo a very detailed medical history and a whole slew of diagnostic tests that would help the practitioner to derive a working diagnosis.  And this diagnosis is what would be targeted initially by treatment.  Online, then, it is difficult to offer anything conclusive.

From what you are describing, you are more likely needing to drift towards kidney yin deficiency points such as LU 7 / KD 6 among others, rather than liver fire.  The yin is the cooling aspect of the body that allows the heat to proliferate - this is a more common scenario (which isn't to say it is true for you).

In our predominant system, the tam system, we would likely use some or all of the areas described in the tam healing for acne page coupled with those targeted towards their diagnosis in Chinese Medicine terms.  The areas described in the tam healing section can be used with massage or any other technique.

As I stated it is nearly impossible to do a comprehensive diagnosis within a public forum.  There are just too many variables.  I offered kidney yin deficiency simply because it is a possible match (and a common imbalance) with regard to the few symptoms/issues (notably heat signs mostly at night) you described in your post.  Further, you can rarely go wrong tonifying kidney yin.  Clearing too much heat, however, when there are signs of deficiency (qi and/or yin) can further entrench problems in certain cases.