Letter X Tracing Worksheet. Learning letter formation and tracing letters is a fun activity for preschool kids. Children start learning letters using many sizes and formats. Most children start tracing letters using their fingers in mud, pulses, and other food items. Once kids learn letter tracing using big fonts, they can start tracing with smaller-sized fonts. This letter X tracing worksheet is created to help children practice tracing from big to small-sized fonts. Download letter X pre-writing worksheet and trace letters in multiple sizes.