A small lesson on how to determine if the garment fits?

In class I learned that they are 5 elements on discovering if the garment fit these are:
1) Grain
2) Set
3) Line
4) Balance
5) ease
These elements were originally identified by Erwin, Kinchen, and Peters in 1979.And I will explain in more details next.
So what is grain?... when cutting the fabric manufacturer will try to lowers cost by cutting the fabric off grain that means the garment will not hang straight. If the fabric is cut on grain the fabric will drape better and will hang evenly.
Next Set, this means that the garment doesn't produce any wrinkles undesirable. This is very easy to identify when trying the garment. If the garment seam to look small and you try another size and it still looks weird that means the garment does not fit because, when attaching the fabric they did not set the fabric on place.
Look for line, this refers to the alignment of the structural lines, you will be able to see some lines when trying the garment which is normal and it must happened.
Don't forget balance, this is a very easy element to identify, if the garment is not equilibrium they its not a good garment.
And lastly ease, the most important element some garments will have ease some will not, and this is mainly the amount of room in a garment. It is more favorable if the garment have some room that will allow you to do some movements.
So next time you go shopping try a garment and look for this elements!!