About 18-to-22 illustrations to accompany research paper publications posted to website. Pay per hour is $40. Experienced illustrator should be able to complete the task in 5 hours. These are essentially high school algebra graphs with more detailed labels; x-axis, y-axis, and free-hand smooth curves similar to parabola or hyperbola. However, this is moderately precise work in order to capture the scientific content. Generic similarity in diagrams will greatly expedite and simplify the task after you get the requisite accuracy. Detailed published example plus instructions sent to earlier candidate are available upon request.