Well, you do your homework i.e. for a school project then it depends: if you decided now and you predict it: - Tomorrow morning I will do my homework or you could say what you will be doing i.e. this time tomorrow - This time tomorrow morning I will be doing my homework but most common statement would be - I am going to do my homework tomorrow morning

For verb tenses, either sentence is fine but we don't normally say we are "practicing" our homework. You can either say "Tomorrow morning I will be doing my homework" or "Tomorrow morning I will study." The word "practice" means you're doing something over and over to get better at it and usually applies to a skill. You can practice music, practice programming, practice a sport.

1Tomorrow morning I will be practicing my homework . 2Tomorrow morning I will practice my homework . Both 1 and 2 are perfectly good English. Personally I would say 2. It is ssssooooo much easier. 1 really sounds like an exercise from a grammar book or a correct answer in an English test. Do people really say 1 in real life? Not that I hear.