How to add a schema to OpenLDAP server

vim /tmp/borrame.conf
(this is what goes in the file)

include /etc/ldap/schema/core.schema
include /etc/ldap/schema/cosine.schema
include /etc/ldap/schema/nis.schema
include /etc/ldap/schema/inetorgperson.schema
include /etc/ldap/schema/misc.schema
include /etc/ldap/schema/mypersonalschema.schema

mkdir /tmp/borrame.d
slaptest -f /tmp/borrame.conf -F /tmp/borrame.d

Edit the generated file
vim /tmp/borrame.d/cn\=config/cn\=schema/cn\=\{5\}mypersonalschema.ldif

I changed the three head lines to this:
dn: cn=mypersonalschema,cn=schema,cn=config
objectClass: olcSchemaConfig
cn: mypersonalschema

Then I deleted these lines from the bottom of the file:

structuralObjectClass:
entryUUID:
creatorsName:
createTimestamp:
entryCSN:
modifiersName:
modifyTimestamp:

And at last I inserted the new schema to the ldap tree:
ldapadd -Y EXTERNAL -H ldapi:/// -f /tmp/borrame.d/cn\=config/cn\=schema/cn\=\{5\}mypersonalschema.ldif