I'll be working on a project for a system that I've just started learning. I will be making significant changes and also creating some things I'm not familiar with (creating services, working with ports, etc.). I need to give an estimate on the time I think it's going to take to do all this, but I'm having a hard time coming up with a way to do that. I normally find estimates hard, pretty much take an educated guess, add on 30%, and hope I'm close. Anyone have a better way? Thanks!