Signature Problems

I've spend a while trying to re-size my sig, but it keeps turning out small. I've enlarged it on PicsArt, and even on my apple, but every time I upload the signatures it keeps going back the size it is. I haven't seen anyone have trouble with this, but I find it odd that I am. I'm using the same app as Mitch for example, and his turns out normal, and mine super small.

That sig size now actually looks decent. Try the center feature, makes it look neat. Plus, it might be a brain-teaser, and might look bigger centered.