I’ve been right where you are man. I could go on forever on this topic, but to keep things concise, I can tell you that worrying about this will do you no good. I’ve had coaches that have pushed me and I’ve made very quick gains, and then I ended up injured and gainsless for over a year. I had to experience it to believe it, but just take my advice that you’re on the best route towards your goals now.
The best thing you can do for yourself is to focus on what you can control – staying healthy, and perfecting your form. Soak up all the knowledge you can on how to strengthen your core, create stability, and find the right technique to use your leverages as efficiently as possible.
If making gains is important enough to stress over, it’s important enough to get someone to help you. Hit up one of the coaches here and get yourself on a custom plan with video coaching. It’ll do you wonders and you’ll start making consistent gains and be able to smooth out all the things missing in your form or routine.
Hope that helps. There’s no sense in worrying over not being where you want to be when you’ve got knowledge and help at your disposal.