The thickness of the lines. People naturally apply more pressure to certain parts of their signature. Maybe the right side of the person’s “l” loop is thicker than the left side, for example. The slant of the signature. As you trace, pay attention to the natural slant of the signature and be sure to follow it. The order of the letter formation. For instance, does it look like the person crossed his Ts dotted his Is after completing the rest of the signature? This can affect the way the final signature looks. It’s a subtle matter, but it can mean the difference between a decent forgery and one that’s easy to call out as fake.

A deep impression will be noticeable as a sign of forgery, so try to make it as faint as possible while still leaving enough of an indent that you’ll be able to go over it in pen.

Look at places where the letters connect. Is there a lot of overlap between letters, or are there spaces between the letters? Check out the formation of the letters. Are they legible? Misshapen? Scrunched together? Do they have dramatic flourishes? Look at the height and size of the loops. Are they big and billowy? Small and sharp? Getting the loops right is central to a good forgery. Examine the slant. Does the signature slant to the right or to the left? How much does it slant? How much space does the signature take up on the line?

As you practice, note minor differences between the original signature and your practice signatures. Make adjustments as necessary. Keep practicing until the act of writing the signature feels natural, and you can sign the name without pausing.

If you don’t have a lot of time to practice a signature before signing on the dotted line, your best bet is to first study the signature, taking note of all the important elements, and then sign it as naturally as possible while actually looking at what you’re doing.