How to make this kolam rangoli?
Begin at the center with a 4-cornered basic pattern. Double the line. Superimpose a bigger 4-cornered pattern. Add a pink cosmos flower in the center. Follow your eyes and copy 
How to make this rangoli?
Starting with a curly center, keep moving and close the circle. Lines in between. Tendril pattern. Pointed-petal whirl, double-line. Peacock feather inside petal. Peacock feather in successive whirl. Close with three lines in the outermost whirl.
That’s a French hollihock flower in the center.
This rangoli starts with a triangle in the center. Another triangle to make a star. Double the line lines around the star. Twin leaves come next. Flower petals in a double line. Tendrils in the center of the petals. Leaves with double outline, tendril in center. Done in moist coloured chalks.
Made with moist, coloured chalk.
How I made this rangoli?
Starting with a square like shape in the center. The corners have a petal like twist. Each successive line is larger and pronounces the shape further. Finish with flowers in the four corner-centers.