I know there are "rules" but I don't think I am following them.
Ooer - I didn't get the memo

Two questions:
Do you think my technique is going to come back and bite me on the bum later?
No one can possibly know. IMHO its best to deal with today today and tomorrow tomorrow, KWIM? If it works for you now, great! If it becomes a problem later, you can fix it then. Of course, it may never become a problem!

How do you get your baby to sleep?
Usually wrap, place in cot with mobile on, and pat if she's crying. Sometimes she settles herself - a more recent development

All the best with it - you're doing a marvellous job