diff --git a/book/source/17-zoom_certificates.md b/book/source/17-zoom_certificates.md
index ec445d1..72d3eb6 100644
--- a/book/source/17-zoom_certificates.md
+++ b/book/source/17-zoom_certificates.md
@@ -154,7 +154,7 @@ The Public-Key packet consists primarily of the cryptographic key data. Let's lo
 
 - `pk_algo: 0x1b`: This corresponds to the key's public-key algorithm ID, which has a decimal value of 27. Refer to the list of [Public-Key Algorithms](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-10.html#name-public-key-algorithms)) for more details.
 
-- `public_len: 0x00000020`: This section specifies the octet count for the subsequent public key material. In this case, it represents the length of the following `ed25519_public` field.
+- `public_len: 0x00000020`: This field specifies the octet count for the subsequent public key material. In this case, it represents the length of the following `ed25519_public` field.
 
 - `ed25519_public`: This is the [algorithm-specific representation](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-10.html#name-algorithm-specific-part-for-ed2) of the public key material. The format is based on the value of `pk_algo`, which, in this case, is 32 bytes of Ed25519 public key data.
 
@@ -776,7 +776,7 @@ The signature is calculated over a hash. The hash, in this case, is derived from
 - the signature's salt
 - the serialized primary key's public data
 - the serialized User ID
-- the serialized self-signature packet (excluding the unhashed area)
+  This section specifies- the serialized self-signature packet (excluding the unhashed area)
 
 Refer to [Computing Signatures](https://www.ietf.org/archive/id/draft-ietf-openpgp-crypto-refresh-11.html#name-computing-signatures) in the RFC for details.