Choose any picture you want and crop it to the right proportions that you want. Go to your blog settings and click the choose avatar button at the top, then choose the file that you saved the picture in.
I use Photoshop or: http://www.snazzyspace.com/banner-creator/
You have to make your own :)) Be creative and imaginary :))
Making a tumblr theme is not that easy. But there are sites that offers good quality themes, with affordable prices.
You're supposed to make your own URL.
She doesn't own a tumblr account :)
If you go to Tumblr's home page, it has a form for you to fill out to make an account with Tumblr.
You can get some backgrounds directly from the tumblr site, or create your own
a banner is the image at the top of your blog which has your blog title or your name in it. If you have a sidebar circular ones look better, but if your links are at the top a rectangular one looks better.
Well, majority of people use Photoshop now-a-days and getting a free download is easy to find if you look in the right places. Once you've got PS (Photoshop) downloaded and situated, I suggest that you Google the basics of the program. Next thing I would do is YouTube or search on Tumblr some PS tutorials. Then you'll start to get the hang of everything and will be able to make your own banner for your fanfiction.
Step to start making your own GIFs through the Tumblr app: Compose a New Photo Post in the Tumblr Select a Video or Photo Burst Marked with 'GIF' Edit Your GIF Publish Your GIF
Your own.
You can use the Whisper App to make facts on Tumblr.