If you have a custom icon you can simply upload it where you would normally upload your display picture.
The Twitter icon is a little blue bird. Presumably they used a bird as they 'tweet'
Tjetz is a famous twitter icon .
Your header is the picture behind your icon and bio. (Your icon is like your profile picture)
You can't copy and paste images on Twitter.
You have to be a translator and contribute to translate parts of Twitter into other languages.
Save a gif to your computer and upload it as your profile picture on Twitter.
go to twitter.com and go
73 x 73
Yes of course.
Twitter doesn't store a "history". You can delete a tweet by hovering over it and clicking on the trash can icon.
To find your old Twitter icon, go to your Twitter profile and select "Edit Profile." From there, you can click on your profile picture to see if you have any previous icons saved. If you’ve uploaded multiple images, check your device's photo gallery or cloud storage for backups. Alternatively, you can check your email for any notifications from Twitter regarding profile changes that might include your old icon.
To get the follow me icon get the like button code through your Twitter account. Then copy paste this code into your tumblr blog. Go to Tumblr Dashboard >> Your Blog >> Customize >> Edit HTML Here paste the Twitter like button and place it properly.