You will, practice and patience. It took a 5 year apprenticeship and many years of application for me to achieve this, and I am still learning.
I have found, over the years, that many people tend to treat the finishing as an aside to making the actual item, with the thought "Now all I have to do is finish it". Every step of the way is important and the finish will only ever be as good as the preparation.
I hope this doesn't come over like I have a big head, I am only offering some advice and you kn ow what they say, it is only worth what you pay for it.