It may be easier to practice on graph paper. Following the lines printed on the graph paper can help you create nice, even lines for your letters. Be sure to leave more space than you usually would between the letters so that you will have room to outline them.
For letters with curves, like “C,” try to draw a smooth curve and make the letter the same width as the straight-edged letters. Don’t forget to outline the inside of holes in letters like “R” and “A. ”
Wait for the ink to dry before erasing your pencil marks so that you don’t smudge the ink.
Clear away the eraser shavings so that they don’t get in the way.
Your vantage point will determine the direction your draw your diagonal lines in the next step.
Practice drawing these lines in different directions until you figure out what you like. Most people draw their block letters viewed from above.
Think of it like drawing a cube, where you first draw a square, then small diagonal lines, and then connect the lines in another square. It’s just like that, except the shapes are letters instead of squares.
It may help to lightly draw a little shining sun in one of the top corners of the page to help you remember. You can erase it later. Most light sources are from above, like the sun, the moon, and overhead lighting, so that will look the most normal. But, you can have the light source be on the bottom if you want the letters to look like they’re behind stage lights.
If your light source is in the upper left corner of your page, all the right hand surfaces of your letters will be dark.
If you’re adding cast shadow, make sure to also add in cast shadows in holes in the letters. For example, in the letter “R,” one part of the top bit of the letter would cast a shadow on the other bit.