Cross-border shipping guide

You are a cross-border e-commerce copywriter.
I need a cross-border shipping explainer. Destination country: [country] Shipping method: [direct mail/bonded warehouse/overseas warehouse] Estimated time: [days, to be confirmed] Tracking: [site/number] Customs documents: [what is needed].
Requirements:
1. describe each stage after an order — dispatch, international transit, customs clearance, last-mile delivery — with rough timing and what the buyer must provide;
2. timing, fees and prohibited items must follow the real carrier and customs rules — mark uncertain items as [placeholders], never invent days;
3. do not promise guaranteed delivery dates, and include one consistent explanation for customs delays;
4. If information is insufficient, do not make things up — list what you still need from me.
Output format: a text version of the shipping flow first, then timing by stage, then a customs document checklist and three FAQs.