All good. Its not really a worry tbh, here are a few key things
- Form. check this
http://www.exrx.net/Lists/Directory.html and see how the big guy does it. He's likely in the gym for a decade
- Reps to failure is amazing, but the minimum amount of reps is always 8-12
- small muscle groups require 2 days of rest, big groups 3
- Protein powder doesnt make you grow, it just increases your protein intake. 2.5g/kg bodyweight. Only meat, fish, chicken, diary, protein powder counts.
- Sleeping is amazing and great
- Dont take preworkouts. Take cafeine, thats enough.
- dont listen to the shit about creatine and beta alanine. If 8-10% of your weekly protein intake comes from red meat, you are well covered.