Like your making a sig in photoshop and its looking awsome and your so hyped... but when you post it, it looks like sh!t that happens to me alot...... how about you?
yeh or u think to urself its the best uve eva dun then u post it and ppl omg that crap kinda thing or i dont like it terrible lol
this happened to me once, i made a super animated sig, but when i posted it looked all pixelated and low quality.
If anything, you should always make sure that the colors you're using are web-friendly. The internet in general doesn't allow for the millions of colors that you can use in photoshop, which is probably why your sigs look different (i.e. crappier) whenever you post 'em online...