Alter Table Permission To Dbo

I have the following requirement

I am creating a login and database user 'test' on a database with dbo
role .
I want to remove create table , alter table permisions to this user.
I am able to revoke create table permission but alter table goes
through.
I gave a command deny insert,delete,update on ssycolumns to test.
Still I am not able to prevent user altering schema . Alter table
successfully goes throgh.

I do not want to use datreader and datwriter role.
since I want user 'test' to create storred procedure with dbo owner

Is there a way to achieve this ?

Thanks

M A Srinivas