I had Jan check over some sentences I wrote which I knew were incorrect. Here are the results.

My version …

Jeg har blitt veldig opptatt hele uke.
Jeg skal ikke blir så opptatt nå.

Jan’s improved version 🙂

Jeg har vært veldig opptatt hele uken.
Nå fremover blir jeg ikke så opptatt

At least I can tell when something is wrong, even if I can’t work out what 🙂