Hi Evgin,
Sorry for the slight delay in response, I was writing a blog post.
I would recommend the following:
Product name: Audi A6 Rear Lamp Set
- Seems fine but not keyword focused on what people are searching for.
Short Description: A Short & Sweet Description
- I am presuming this is a CMS field that will be displayed in the category page of your ecommerce site, before someone clicks to find out more on this particular product. So yes something short and sweet.
Long Description: A Long Boring Description
- The long description, shouldn’t be boring but yes it can be boring to write. I would expect this to appear on your product page providing confidence and specific details about the product.
Meta Title: Same as product name
- Yes this should be the same as the product name, maybe include some additional variants on the most popular keyword. For example "Popular keyword - Second most popular keyword".
Meta Keywords: What more can be said about an A6 Rear Lamp Set???
Meta keywords are ignored by almost all search engines these days, so I wouldn’t worry about these and possibly remove them. Unless they are used within your websites internal search facility.
Meta Description: Same as long and boring description
- Meta Description should be no longer than 156 Characters (Including Spaces). So maybe the short description could be placed here with any discount, sales or delivery pricing message your site may have.
It seems to me that you need more support that these Q&A's can provide, this is one problem but you will find many more, it's hard to get it all correct. By going through this Q&A process it will take you a long time to find all the answers you need. Just a friendly bit of advice to try and save you time which ultimately costs money.
If you make the wrong choices, you may find that you miss opportunities which could drive more traffic to your site.