Edit 1: She is not my grandmother

[Richard]

Hey rose,
I like what you're going for in this poem. However, my biggest suggestion would be to vary some of you language use. I'll go into greater detail below:

Roses: She is not my grandmother -The word "roses" is in this poem a lot, so I would suggest dropping it from the title. As well, the rest of the title is a line in the poem, so I would also recommend reworking the title.

Painted face, eyes closed, lying still. -I get the impression that the speaker's grandmother is dead here, but it sounds too much like she's just asleep. If that was your intention, then ignore this point.
The scent of roses fills the air, -This is one of those times where you need to show instead of telling. What did they smell like?
roses that lie heaped upon the coffin. -I would suggest not using the word "roses" a second time here.


Her lips dyed red
to match the roses. -I understand the emphasis on the roses. I just wonder if it would be more appropriate to come up with a non-rose metaphor here to describe the red of her lips?
Powdered face froze, -The speaker already mentioned how her face was painted. May be give some details for how it looked. For example, how did it look frozen?
waiting to smell the floral scent. -I don't get this line, but may be I'm missing something. It wouldn't be the first time.


Painted face, alien face, -I would suggest cutting "Painted face," from this line.
she is not my grandmother. -This line seems to be the whole point of the poem. I would recommend rearranging this stanza and ending on it.
Lips flat, she is not smiling, -I would suggest adding a metaphor/simile here. Her lips were flat as...
she is not my grandmother. -Although I think this is an important point, I don't think it needs to be repeated.
Roses bloom, yet eyes stay closed.
The floral scent fills the room. -I like the last two lines here. I just think the image of the rose here is hurt by the fact that roses have been mentioned so much throughout the poem.

I think you have a good idea here. You just need to play around with the language more. I look forward to seeing where you take this from here.

Cheers,
Richard