I'm a bowler. I average about 175, but that's only because I bowl once a week. I reckon if I started practicing more I could get into the 190s. I've never seen you bowl, so I'm sure what areas you need help with, but here are some general tips. Follow through with your throw. Be sure your arm comes all the way up, and be sure to try to keep your elbow straight. Also, if you have a finger tip ball, when releasing, release your thumb first and then follow through with your fingers. This will put more spin on the ball. As for shooting spares, they're all shot differently. As a basic rule of thumb (no pun intended), when shooting a spare, as you're throwing the ball, point your thumb in the area you want the ball to go to. So, if you're right handed, and you're shooting the ten pin (or left handed and 7 pin), as you're throwing, have your thumb pointing at that pin.

Another tip Ihave is good for the life of your ball. Many people complain that their ball loses it's hooking effects after months or years of use. It's not because the ball is worn; it's because it's not washed properly. Be sure you wipe your ball off before each frame with a towel. The oil that goes onto your ball will change its behavior on the lane. Also, be sure you wash your towel at least once a week so it's clean. And maybe about once a month, put your ball in a basin of hot sudsy water for about 10-15 minutes. This removes the oil/grease that soaks into the ball. This is one of the reasons that ball lose their effects after a while, because of the oil that soaks into it. Many people aren't aware of this. I found out because the guy at my pro shop informed me.

That's all I can think of now! Good luck.