Congratulations on your first batch!
Backsweetening and adding flavor/juice after the intial fermentation is fairly common.
Racking twice in the first two weeks after pitching the batch is not. But I do not see anything you've done that would hurt anything badly.
Remember that mead, like fine wines, take time and patience (lots of patience). You seem to be in a hurry (and understandably excited at doing your first batch) and I'd recommend slowing down and taking a few deep breaths...
Mead needs to age, probably 6 to 8 to 10 months or more to really become nice. Be patient and you will be rewarded with stuff that is better than you ever believed you could make yourself.
If you are willing to allow proper aging, then things like the clarifying agent become unneccesary, at least until your batch hasn't cleared after 6 months. Everything you add to your mead has a chance to affect the taste (positively or negatively), so generally, until you learn the use and purpose of everything, keep in mind that "less is better".
Finally, don't expect your mead to taste very good after only a couple of weeks. There are likely a lot of things that need to mellow over time or "age out". This is generally true in every mead, regardless of recipe, they will get better over the first few months time....
Again, congrats!
Pewter