Hello Kyiav,
Of course you can do it yourself... if I can do it anyone can. I never pick up a screw driver unless it is to tinker with a sewing machine. I'm not a mechanically minded person, it's just that I love sewing and sewing machines. If you don't feel confident at first, have someone with you and do it together. There is absolutely no need to part with cash to get someone else to do it.