Here's how I look at it...
• You will learn to make shots just over the course of time, so don't sweat shotmaking for now. It won't come in a day but it will eventually to anyone who plays a lot.
• Cue ball position, however, is not so automatic. In order to play good pool, first you need to have all the tools in your toolbox... the ability to spin a ball off the rails, the ability to draw the ball at will, the ability to make the cue ball stop dead after a straight in shot, at any distance, etc.
Basically, with all these skills you have options. Then you can worry about which option is right for a specific situation.
Without the skills, your options shrink and you are forced to pick an option that is marginal or dead wrong, because all the others are out of reach. If the right shot is to sink the object ball then draw the cue ball six feet to the head rail... and you have never drawn six feet in your life... it does absolutely no good knowing what the right shot is (which is the focus of most 8-ball DVDs and books).
So:
• Can you draw and follow the ball the length of the table, consistently and at will?
• Can you realistically sink a cut shot with a lot of sidespin?
• Can you do stop shots at various distances?
• Cut a ball up the rail and spin it back down towards you?
• Drill a shot in with a lot of top and have it travel to the rail, and then all the way across the length of the table?
This isn't everything you need to do it, but it's a starting point. If you can't do some of these things, you should set up specific shots and practice them until you can.
I don't know your level (average is a really vague word) so if you already can do all this and you JUST need strategy, say so.
Thanks for the detailed response. The more I read, learn and practice I realise I am not average but am a beginner (I could beat my mates is all)
I cannot draw and follow a shot the length or the table and I have next to no control on cut shots (I can draw and follow a few feet)
Regarding shot making, are you just referring to my ability to a accurately and put a good stroke on the ball? About this coming in time?
Thanks again for the response.