You're not doing anything wrong. You're new at this, and anyone who expects it to work easily and immediately just hasn't done his homework. You've done one thing right: you started straight shaving, but you have to give it time. It took me two months to gain any level of competence and one month before I was getting the hang of it at all.

Be patient, read the Library, stay with it, use NO pressure, keep your angles low and give yourself time for your technique and experience to build. They will. It just takes some time.

Good luck!