Find clip art flowers from the web and enlarge, or draw your own simple flower shapes. Tape the place mat right side up on a protected work surface. Layer tracing paper, plain paper, and your drawn or printed pattern on the place mat. The plain paper prevents the tracing-paper ink from bleeding onto your pattern. Tape the pattern in place. Draw over the pattern lines with a pencil or pen to transfer the pattern onto the place mat. Reposition the tracing paper as necessary to transfer the pattern over the entire place mat. Remove all papers.
Mix small amounts of textile medium with the paint, following the manufacturer's instructions. Paint the flower petals Bright Magenta and the flower center Kiwi; let dry. Use the tip of a brush to make random irregular-shape dots over the flower center with Satin Cream, Light Leaf Green, and Hydrangea Pink. Add the lines on the petals with Light Leaf Green.
Referring to the photo as a guide, paint the design elements with a stiff-bristle brush. Use the angle shader for the points and to sharpen the shapes' edges. When the paint is dry, apply additional coats of paint to achieve the desired coverage.
Heat-set the paint on the place mat when the paint is dry, following the textile medium manufacturer's instructions.