That's a good-looking target for a new shooter at that distance. Don't feel bad about the miss, at 25 yards it isn't unusual at all on a small target like that, even for more experienced shooters. The SIG's heavy/longer double-action trigger pull for that first shot is a bear to control.
Remember to think "gentle squeeze" instead of "pull" when you're shooting for accuracy. If you mash the trigger hard, the gun moves at the last second and your shots end up scattered on target. Good shooting!