This paper takes the 2D image of toys and cartoons as reference to assist the amateurs to design 3D models fast and conveniently. A contour deep tracing algorithm is proposed for acquiring the whole contour, and Ferguson interpolation curve is introduced to fit the contours. Taking the control points of Ferguson curves as reference, amateurs can easily sketch curves that fit to the image contours. Decomposing the extracted contours into several feature regions, the users can draw some enclosed component contour curves of the target toys or cartoons, and then adopt proper methods to generate the 3D mesh of components. Three modeling methods, namely local deformation, symmetric deformation, and 2D FFD deformation, are introduced for modeling the 3D surface fast. Ferguson curves are also used in 3D painting on triangular surface, and large regions enclosed by the painted colors can quickly be filled with a target color. The users select a region of the image and drag them onto 3D models, and then the details, such as eyes, nose, and artistic patterns can be easily painted.