I'm not a heavy Twitter user but keep an eye on changes that are introduced to the service. Twitter recently announced a redesign of user profiles.
The new feature was rolled out gradually at first, and if you were not lucky, you could not get it early on as there was no option to flip a switch to do so.
Today, the new profiles have become available to all users. When you visit Twitter you should get a big "Try the new Twitter profile" notification at the top of the page. A click on take a look switches to the new profile temporarily which you can then enable there, or not at that point in time.
The short tour highlights the major changes that Twitter implemented on the new profile page. You get a large cover photo similar to the one on Google Plus or Facebook, a larger profile photo, and options to pin a message to the top of your profile page.
If you do not see the notification yet, head over to this page on Twitter and click on the get it now button there to launch the same process.
Besides that, it is making use of -- much -- larger fonts, and displaying all your photos and videos that you have uploaded or linked on a separate page for faster access.
Note that there is no turning back. Once you have enabled the new profile, you cannot switch back to the old one anymore.
Not switching to the new profile on the other hand is likely just a temporary solution as Twitter will enable them for all users eventually.
One advantage here is that you can change header and profile photos directly on the profile page. This is also true for other information such as your bio, location, or website link. Just click on the element you want to modify to do so.
In the case of the header photo, Twitter recommends a photo with the dimensions 1500x500. It is automatically adjusted, and you can use mouse drag to change what is being shown and a zoom slider as well.
The profile photo on the other hand has a recommended size of 400x400.
Twitter has created a header image gallery and uploaded it to Flickr. All users of the service can use those images on their Twitter profile. Simply click on an image you like and then on the download link that is displayed on the page.
If you want to pin a tweet to your profile, simply click on the three dots below it on Twitter and select the "pin to your profile page" option here to do so.
When you browse profiles, you can now filter messages by tweets, tweets and replies, and photos and videos.
How do you like the new Twitter profile page design?