What are the parameters for appearance? what increases or decreases it? what is ideal weight?
Not a simple answer at all. The list of variables that affect your girl's appearance is as long as my arm (below a list of variables, if you are curious... And I am not even sure if it is all of them)
Long story short (kind of short...), your clothes (but I believe the clothes depend as well on your weight, don't show too much if you are "heavy", at least on my ugly duckling 135kg girl is better to cover than to show), your weight, how toned you are, your teeth, the condition of your skin, if your hair is brushed or not, if your teeth are clean, your make-up, the size of your eyes, the size of your lips, if you have glasses, the size of your eyelashes, if you are tanned, body hair, if you are clean or sweaty, your age (or what age you look like)....
Regarding ideal weight... I sincerely have no clue. I believe that as long as your BMI is ok, you will be okish.
In game:
- Buy vitamins and take baths or sauna to improve your skin. Get bigger lips and bigger eyes at the clinic (but not too big!), fix your teeth, enlarge your eyelashes at the salon, get tanned (but not too tanned!), get toned (increase strength, agility, etc...) and get a weight between 65-70 (don't quote me heavily on that), and you will do ok.
- Brush your hair, use lip balm and make up (with a high skill on make up), and shower regularly, using deodorant.
- Clothes are quite critical. Look for high quality, revealing clothes, and you will do ok. You can buy panties and bra at Lusso Intimo that give you a small bonus.
Quite a few events look for a variable that is called hotcat, that is basically Attractiveness/20
I tried that, but the new values don't stay, when i continue playing, they go back to the old values !
I believe there are some (the ones in bold) that are calculated based on others, i.e. pav_slut is a function of pav_sex and pav_prostitute. That may be the reason why they reset.