i have never sewn anything (well except for button) or make any clothes before, this is my first time and it turns out quite well. so for anyone who want to try but never sewn anything before, don't worry. you just have to take the first leap and everything will flow along. have fun.
Step 1: preperation
things that you will need:
-sewing machine (sewing by hand is possible but it will be much harder and need more time)
-hard cloth (a type of cloth that will allow the collar to stand up straight)
-button (as unique as possible)
-white long-sleeved shirt