I played electric for 10 years before playing upright.
Let me give you some cold hard wisdom.
Looking at the neck of your upright isnt going to do you any good when playing it, in fact it will cause you to make more mistakes. Adding markers on it really wont help you learn the notes or the positions, even when starting.
In fact, i have a lot of bad habits on electric i wish i didn't have from looking at the neck. I do my best not to look when i can, because reading music is a pain in the rear when i constantly try to look at the notes i play.
Find a good teacher who can teach you the positions. Use the open strings and harmonics as references when learning and realize its gonna be out of tune. It will get better with practice.
"The Intonation is evidence of a Correct Motion."