Have a go folks, Clint is right.
But be wary.
Am, C, D, F, E7
You’re not improvising over a diatonic progression.
A minor pentatonic:
A, C, D, E, G
Might some of those notes clash with the chord tones?
A minor:
A, B, C, D, E, F, G
Hazards to be aware of?
I have just answered a question about melody (which is what improvisation is after all) over progressions with borrowed chords - in the borrowed chords topic here. This is an example where one scale does not fit all.