How do you make your signature picture not blurry?

[Lunartic.]

I've been trying to figure this out. I'm not changing the size and I'm fairly sure it's in the size range so I'm not sure how to fix it.

 

[Xion]

Upload it by URL instead.

 

[Horus]

1) Make sure you save it as a PNG unless it's an animation/Gif. If the latter, it'll be bad quality just because that's how Gif's work.

2) Never use TBT to upload images
-Instead upload your image to an image hosting website, like Imgur.com, and take the Direct Url it spits out, paste it in between

[img] and [/img]

3) If you've done all of these things, go back into Photoshop/Gimp/Paint/Whatever and make sure it's the right size, file, zoom, and repeat