You are absolutely correct. However, unless you have a professional to teach you or a school course nearby, the way to achieve skill and technique is to jump in and try, try and try some more. Yes, you'll screw up .... but you will also learn. After all, when you were a little tyke, you had to learn to use a knife, fork and spoon. This is no different.
And if you haven't noticed, you can screw up a hundred times and there will be people here to advise you a hundred times and more. This place is valuable that way.
Jim