Thank you so much for your detailed feedback, that's exactly what I needed to know. I'm the kind of person who don't quite read instructions myself, instead, I like testing things out. So when it comes to me to write a manual, I always have no idea where to start. (T_T)
It's a great idea to start from one info, and then one by one more. Actually that's something I was trying to do (and failed). If we choose the default beginner friendly plastic pot, and then the default soil fomula which gets dry in a moderate rate, then the only thing that would determin a cutting's life or death in the first 5 turns' summer is only the different places with different sunlight levels. After that, in the 6th turn when autumn comes, we'll meet the second factor, the weather. It will affect the soil moisture as well, but that can also be adjusting through simply place the plant at a different place with a different sunlight level. And after sucessfully survive to the first winter, and maybe see one or two colors of flowers. If we'd like to see more flowers in certain colors, and we know in order to achieve that, we'll have to put them in certain sunlight level without killing them, we need now begin to try out the combinations of different pots and different soils that can make them both survive and thrive, in a certain color, at a certain place of a certain sunlight level.
The tricky part for me is, I just don't know how to write it simple and clear in the manual, or even better, make it intuitively known by people without having to read a manual. I tried but it just dosen't seem to work. Thank you so much for your suggestions, I think I'll probablly try start with a vague instruction about places and sunlight levels, how they would affect the soil moisture, and how too dry or too wet soil would kill a plant. Maybe start with certain numbers of sun icons and water icons on each place to put the plant. And make soil moisture level be seen through both visual clue and some text descriptions using the magnifying glass tool. And maybe some warning tips about how too dry or too wet soil may make a plant sick and wilt move it to some place else through a popup when the leaves turn yellow for the first time. We may think it through during the rating period and try update the game after that to see how it works. Thank you so much for your constructive advices, would be very appreciated if there's more feedbacks in future.