what are the best wording to take feedback of job from client

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What’s good about this email?

Video reviews are an incredibly powerful form of user generated content. They provide visual proof of the happiness your products can bring, or the problems they can solve. They’re highly relatable and offer potential buyers truly authentic, engaging review content.
Our eCommerce client Sun Of A Beach uses a rewards based approach in their review collection campaigns. Remember though, if you’re giving a reward you have to give it to everyone, regardless of how positive or negative a review they leave.

Only customers who have bought your product or services can give a testimonial. Printing a link to your testimonial landing page on your receptis ensures that all customers have a way to share their thoughts. You might put this on other materials your customers often look at, such as a menu, chalk board, or promotional materials.
This is similar to the post-sale email, but it’s personalized for this customer and this stage in the buyer’s journey. Your customer is a bit more comfortable and a bit more attached to your business now, so they’ll probably be more willing to share a testimonial. Acknowledging their return and personalizing this email with their purchase information shows that you’re paying attention to them.

When it comes to good feedback, it doesn’t matter who starts the conversation. What matters is that the lines of communication are open between you and your manager so that you can receive the input you need to continue to grow in your career.
I wanted to schedule time for us to discuss what you thought about [the item(s) you want feedback on].

So what types of words can you use instead? That same data from MailChimp showed that these words worked better:

• Complete this survey of indeterminate length
• Complete this short, 3-minute survey

References:

http://blog.reviews.io/5-awesome-review-collection-email-examples
http://boast.io/5-examples-of-testimonial-request-emails-that-work/
http://www.themuse.com/advice/the-email-template-you-need-to-ask-your-boss-for-better-feedback
http://herothemes.com/blog/customer-feedback-email-template-samples/
http://simpletexting.com/6-examples-of-good-customer-reviews/