Hi I need some help
about with a few more sentences, I'd just like to know what's more common in
Aamerican
Een
glish:
All the pictures I've taken are really bad! or All the pictures you took are really bad!
If you saw him please call me! or If (you) have seen him, please call me!
If you got hurt please tell me! or If you have gotten hurt, please tell me!
and then finally a sentence I was asked from my examiner during a english exam, she asked:
What have you chosen? Isn't it more likely to be What did you choose? No. She probably wanted to know the situation at that time, at the time the question was asked, and not before -- when you chose.
Note: There are no differences in meaning between AmE and BrE (regarding these tenses). The only differences are in usage, and these are extremely minor occasional differences, not at all worth obsessing over! 
CJ