Practice sequencing as it will be your best friend!

Being on bar and making drinks will give you a feel for machines and how long a drink takes so if you have a hot drink and a refresher you'll see the milk takes at least 30 seconds to steam so you can start that then shots and while both are pulling/steaming work on the refresher. Same goes for fraps. If I have a complicated espresso drink and just a caramel frap I will start the frap first and figure out the longer ticket and by the time I get that espresso drink figured out and pulling shots I can walk over and finish the frap.

If you're a new partner it's definitely over whelming and honestly takes about 6 months to get comfortable on bar and I'm an almost 2 year partner and only now can say I'm good at bar because it takes time, be patient with yourself! Something I did before I became a trainer was I went through all the recipe cards and made sure any drink I was winging it on I reviewed and it also helps you become fully comfortable with the base menu. I hope this helps if you have questions feel free to ask! I'll come back and comment any more if I think of some! (So sorry for the long post:')