Do you have students who failed to learn?

This is the case. It is difficult to learn in a very bad eyesight, nematantiems symmetry having problems with hand coordination, and even those who do not want to pay or learn.

Is it possible within a short period of time to learn well?

During the training time can be devoted to learn the correct forms to make easy to make-up, to know the terminology, know how to choose colors and tools needed, to advise the client. All the other depends on your desire, effort and practice.