Sometimes it also doesn't work, here's another example of something I tried yesterday.
I was trying to recreate Styles P's-Daddy get that cash ( or my own twist)
My Chords where in the Key of C and goes: vi-V-IV stretching the IV the rest of the 2 bars.
I was just an an experience seeing what it would sound like to modulate to the same progression in the key of Am.
I did 8 bars in the key of C and then 8 bars in the key of Am.
So on my last 2 bars in the key of C, I played they:
vi-V-IV and the last 2 beat played V7 of Am and then proceeded to the 8 bars in the new key.
Is this correct?