Everyone has their different formulas. I use a system of 80% projects and behavior, 10% takehome sketchbook assign and 10% quizzes. I monitor their behavior and if they get a behavior mark during that project, their grade goes down for that project. I didnt have to do that until last year. I grade projects a, a- A+, etc based on following the rubric I make up for each project. It will take awhile before you are able to have a rubric for each project but it makes grading easier. Good Luck!