Express while conceptualizing:
Be fully self expressive when you are thinking about the page to be created. How a web page needs to come up, cannot be ever documented. It can only be explained by dramatizing, and acting. Facial expressions combined with hand movements and Voice are the best tools for explaining a wireframe to the designer.
Look for Benchmarks in the physical world:
The primary instinct of a designer is to Google for benchmarks, search for templates or look at award winning websites to benchmarks for the job at hand. My experience says that designers who look at the physical world around them, the workspace, the roads outside, the kids room at home and the clouds in the sky: come up with the best designs, because Nature shows which colours create harmony and which distract!
Do not copy Vectors/clip-arts:
Google image search throws 1,230,000 results for 'vector shopping cart'. You cant create an impact by choosing the best out of these, but the art is in integrating your main design theme with a cart symbol if you are creating a Shopping site. Be original, even if it takes that couple of extra hours at work.
Identify the key elements:
This is the most important aspect in creating an impact with web designs. Websites are made up of key elements: A Shopping website has key elements like the Cart, Categories, Search and Price/Discount depictions. A Education website has Key elements like the Classes, Subjects covered, Tests and teaching modules. The Design must make it easy for the users to identify the section that they are browsing at any point of time.
Create a package:
When a designer sets out on creating web pages, the thought is usually limited to the pages that are to be made. One must always look at the complete packaging rather than the pages that are to be created. There is much more to a website than the pages that people browse. There are elements like System generated mails, Promotional mailers, Social media pages, Widgets, Banner ads, Partnership icons and more. The designs need to be thought through to take care of the complete package, and not only the pages.
For people looking to read about creating usable interfaces for TV,
here is the link to my last years post.