Help with I-129f

I have a couple questions please in desperate needs of answers.

" Checklist of Required Initial Evidence (for informational purposes only)"
It is said to provide evidence of my us citizenship, evidence that I visited and went to a hotel with my fiance, evidence that we are together.

I'm just wondering how do I provide these evidences like do I just print out of our pictures together, visits, our stay in a hotel, plane ticket, and evidence of my us citizenship? I'm very confused haha

my second question is,

is this where they want me to send the form after filing it completely?

FedEx, UPS, and DHL deliveries:
USCIS
Attn: I-129F (Box 660151)
2501 South State Highway 121 Business
Suite 400
Lewisville, TX 75067-8003

Lastly, what if I forget or miss a step on part of the filing form and it gets rejected. Would they still take my money and have me send another one?

submitted by /u/ryzedude
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source https://www.reddit.com/r/immigration/comments/q9gi6n/help_with_i129f/

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