I don't know if Farsi conventions are different on this, but for Arabic they're not bad at all. Assuming Farsi and Arabic are the same, I would make them darker, more curvy, and slightly taller.

But there are other problems. I don't know Farsi, but I can see that:
1) The spacing (especially between words) is shaky.
2) The Kaaf in the last word (far left) most probably needs to join with the Noon, instead of being the lone form (unless it's some quite peculiar Farsi exception).

hhp

One other thing: the colon is too tall (it looks Latin).

hhp

thank you for your comments hrant, regarding the spacing - i have no idea how i could solve it. the texts are far too long to be adjusted sentence by sentence.

i was also wondering about the kaaf, and i have no idea why it doesn't join - although it should most probably. it is really awful to set type without being able to understand it.

the colon is the default nazanin colon.
at least the quotationmarks are correct ;|

Well, one brute-force thing that should help a little would be to tighten the tracking and increase the word-space. Like a smile with gappy teeth but good teeth.

BTW, I wonder, what does InDesign optical spacing do with this?

hhp

as far as i know indesign optical spacing doesn't work at all with arabic script - it tears adjoining glyphs apart.