Build a Autoclicker

I am looking for a private autoclicker, it should be able to click on various predefined areas, with missclicks (also in predefined fields). It should only click if the fields are available. I would like the mouse to check if the field is the right one it is clicking on, a small picture recognition check(which I can edit and define) should be added, if the picture resembles what was predefined, the program should click. If not proceed with something else. Scipts should be save and loadable. Speed should be adjustable and randomizable. (Human like) Faulty clicks (in certain areas) should happen on a % basis. A basic UI should be given. If possible: should be fully executable in the background without hindering anything else. The program can bind to Google chrome as it will execute inside it. VERY IMPORTANT: It should NOT import anything from anywhere. It should uniquely work on its own. The picture check etc. should happen without importing anything. It can for example make a mini screenshot to crosscheck. Extra features which can be easily added by you will make it more likely for you to be awarded the project