Let's do the basics first - 2021ver.
Guide for resume for things even experienced often forgot
Only 3 things to keep in mind

2020
2016
2012
Reverse-Chronological Order
the most traditional and ideal format.

- · Cold call, email to generate lead
- · Schedule meetings, presentations for lead conversion
- · On-board Vendors, Channels and Restaurants
Clear explanations of job
Clarify what you did without rhetorical expression.

- · Indepentantly sold 250 credit cards in a month
- · Handled 60+ vendors in the given area
- · Delievered a target revenue of 150 Crores/ year
- · Managed and trained 3 TSM and 6 Sales Executives
Achievement in number
Describe achievement in number as possible.
Reverse-Chronological Order
This is the most traditional and ideal format.
Why so?
The first thing Hiring Managers look for is What you did recently. You'll communicate with Hiring Manager through your resume. Let them find what they want the most - recent experience.

2012
2016
2020

2020
2016
2012
Clear explanations of job
Clarify what you did without rhetorical expression.
1. Explain your job with facts
Too many rhetorical expressions bother understanding your resume. Make it easy to figure out with Facts of what you did. Furthermore, describing with facts may lead to getting a similar but more fit job because Hiring Managers sometimes toss candidates to the more suitable job openings.
Don't do this. 
- · Reach out customer to explore business opportunity
- · Worked hard to maximize the revenue
- · Ensure that the business get converted within TAT
- · Deepening the size of the relationship
- · Become a dedicated contact point to customer
- · Drive business through delivering all service requirements of the customer
Instead, Do this. 
- · Research, Design, Develop Sales strategy and implement it
- · Cold call, email to generate lead
- · Schedule meetings, presentations for lead conversion
- · On-board Vendors, Channels and Restaurants
- · Generate and Maintain new and existing accounts
- · Up-sell and Cross-sell products to existing accounts
- · Achieve given targets to meet organizational goals
2. Describe the precise details of your job
Precise description of your job is ideal. You must include 3 information in your resume.
1. Your client
2. Your role in sales process
3. What you sold
Don't do this. 
Currently Company : **** Infotech Pvt Ltd, New Delhi as an Area Sales Manager from Oct 2016 till date
I was in charge of software sales.
Instead, Do this. 
**** Infotech Pvt Ltd Oct 2016 till date
New Delhi
Area Sales Manager
-
for Channel, Core sales, Product selling
· Acquiring & managing channel partners for insurance sales. -
for B2B, Core Sales, Product selling
· Acquiring new corporate for SaaS products sales and closed the deal. -
for Individual Customer Sales, Core Sales, Product
· Selling B*JU'S product to potential customer(i.e. parents & students in assigned territory)
*Core Sales : Ones who close deals directly
Achievement in number
Describe achievement in number as possible.
Why so?
Write your accomplishment in number. Think about a report without any graphs and images and one with them. Numbers play similar role in resume.

- · Sold credit cards to existing customers
- · Handled local vendors in the given area
- · Ensured that the business get converted within TAT
- · Managed and trained team members

- · Indepentantly sold 250 credit cards in a month
- · Handled 60+ vendors in the given area
- · Delivered a target revenue of 150 Crores/ year
- · Managed and trained 3 TSM and 6 Sales Executives