when you're doing each step, try and lean your body the other way so you counteract the turn and don't fall on the side you're turning

Find balance and try.

and don't put your foot nearby the other because then it's hard to make the next step. i hope this also hepls you!

you should try to keep balance with your body, not with your legs

Use your body and arms to balance to the opposite side you are moving to

I leaned in a corridor where i could use the walls as as ballance if i needed help it helped me alot befor i did it outside

One thing that helped me alot was to simply just practise the balance of each leg alot by just standing on one leg while riding and then trying to jump up and land on the other.

And don't forget to make sure that your board has enough speed. I've fiund that on sliw speed it's much harder to maintain balance.

try more will be the best way i think! The first few times will be difficult, practice makes perfect!

Make sure that your weight is between you legs right over on leg always