有關英文tense 問題想問下

"I just posted photos onto application forms."
Amendment: " I have just attached my photos to the application form."

pasted, not posted

The present perfect tense indicates an action took place in the past, is associated with the present idea of now,eg:-
I have posted photos onto the application forms.
For an action just concluded when the resulting state is still present,eg:-
I have posted (----) ten minutes ago.