Corrections for phrases, plz

[MaTe]

oe-l sì tute-l 'awsiteng   ts-alm-e'a  "Uniltìrantokx"-ti.   
Me and a guy saw Avatar together.

Po z-ìlm-a'u   'awve.
He came before me(first).

Po-l    p-ìlm-eng     tute-ti     Fyape fko syaw oe-ru
He told a guy(who was checking tickets - ommited) how one calls me
ulte   'ätx-ìlm-äle   tsni tute-l p-iy-eng kaltxi-ti    (oe-ru?).
and asked that guy says "hi" (to me).

[Seze Tsawke]

oe-l sì tute-l 'awsiteng   ts-alm-e'a  "Uniltìrantokx"-ti.   
Me and a guy saw Avatar together.

this one looks good, not sure about "'awsiteng" here. for the verb marker it's actually <am> not <alm> but I'm sure that's what you meant.

Po z-ìlm-a'u   'awve.
He came before me(first).

I think it's good, although you may need an attributive marker on "'awve" again it's <ím> not <ílm>

Po-l    p-ìlm-eng     tute-ti     Fyape fko syaw oe-ru
He told a guy(who was checking tickets - ommited) how one calls me
ulte   'ätx-ìlm-äle   tsni tute-l p-iy-eng kaltxi-ti    (oe-ru?).
and asked that guy says "hi" (to me).

wow, this one...... is tangled. the first part is good, but the second.... not sure what you're trying to say here....

[Hawnuyu atxen]

The second has a mistake (i know it, because i made it too ):
"ätxäle" is not a verb, but a noun, so you need "si" after it to make it a verb (and asked that guy to say hello, so it needs the subjunctive):
Ulte ätxäle sìmi tsnì tutel pìyeveng kaltxìti oeru.

But i'm not sure if the "tsnì" here is for "that guy", or "that the guy do something".

[MaTe]

this one looks good, not sure about "'awsiteng" here. for the verb marker it's actually <am> not <alm> but I'm sure that's what you meant.

I was combining tense infix with imperfective perfective mood. Is mood appropriate for that verb? Same for the other case.

In the tangled phrase I tried to find a good way to combine 2 sentences... what is the usual way to do it if both sentences share topic, object, subject?

[Hawnuyu atxen]

It's good than, just one thing:
imperfective is <er>, so past tense imperfevtive is <arm>, or <ìrm>(recent past),

You wrote <ol>, which is the perfective

As i know you can use "ulte" to connect two sentence.

[Seze Tsawke]

this one looks good, not sure about "'awsiteng" here. for the verb marker it's actually <am> not <alm> but I'm sure that's what you meant.

I was combining tense infix with imperfective perfective mood. Is mood appropriate for that verb? Same for the other case.

In the tangled phrase I tried to find a good way to combine 2 sentences... what is the usual way to do it if both sentences share topic, object, subject?

my bad, I didn't know you could do that!