One of the advantages of using Adobe Illustrator to create graphics and drawings is its ability to display textures. Using the "Effects" menu when a document is set to RGB allows you to duplicate the look of chalk. You can use this chalk effect on any line or text in the program.
Open a new document. Select the RGB colour option.
Select a colour using the colour picker tool. Click on the paint brush or pencil tool from the "Tools" menu.
Draw a shape or write text.
Highlight the writing or drawing with the selection tool.
Select the "Chalk" option from the "Effects" menu. This transforms your drawing into a chalk texture.