What are some of the challenges of working as an actor or artist?

Some of the things I would think of would be having to overcome to fear of other people, as in, discrimination, hateful comments, and how good YOU yourself would think your doing.

As well as making sure you are able to remember things like lines and actions say if something was a live performance.

I think the answer to this question depends upon the individual artist. Everyone has their strengths and weaknesses when it comes to being an artist.

Some artists will only try to get into art galleries and shows to sell their art, others will try to sell them online, and others will create them from commissions. The real problem doesn't lie in which method an artist uses to sell their artwork, it lies in their thinking about art.

changeable lenses of different focal lengths allows light to enter the camera,which then forms the image on light-sensitive film;

sorry, but you need to write this essay on your own, or it's plagurism! use the information you gave to you. and find a good topic from the news your good at. for example, video games? just search on your search engine, "video games on the news" and read and watch about it. : ) then just write!