Question Signature length and issues posting

[PinkSunshine77]

Hi I've been attempting to post a Signature for the longest and even though my Signature is only 500x200, (and I have even made it as small as 400x100) it still doesn't save my Siggy. Can anyone please tell me what I'm doing wrong? This is the signature

 

[PinkSunshine77]

I think it might've just been acting up that day cause it works now woo woop!