Congratulations!
As to improving score, you must shave stage time!
When I asked one of the regional USPSA shooters who was really fast on the stages how to improve my score, he suggested I video tape my stages and correct time wasting mistakes.
On my next match, I took a VHS-C camcorder (this was in the 90s), and had a fellow match shooter record my stages. When I reviewed the recordings it was obvious where I made mistakes and wasted time. I immediately changed my approach/techniques and shaved significant amount of time wherever I could (draw, mag change, movement, etc.).
Another thing I did was to set up a practice stage at home (garage/back yard) and practiced moving target to target and decreased my engagement time.
And as others posted, nothing beats practice. I had access to outdoor action pistol range area that was not open to the general public and us match shooters got to set up mock up USPSA stages and practice all day long. My practice session often used up 1000-1500+ rounds as we went over the same stage several times while we critiqued each other to correct mistakes, improve technique and shave time. When I couldn't shoot at this range, I shot at another private outdoor range and when it was often quiet (me shooting alone in the pistol range area), I would set up multiple targets and practice draw/moving target to target/mag changes etc. Even when I shot at indoor ranges with only one lane, I would put up 4-6 copy paper targets cut in half and do multiple double-tap drills (most indoor ranges do allow double taps).
. It appears there's quite a bit of time to make up in stages 1 and 2.
