What you need to do is ride on two skis, and while cruising with those two on lift up, NOT drop, and balance on ski. Try to balance on just your right ski while picking up your left, then try balancing on just your left and pick up your right. Once you know what foot you feel more comfortable with balancing, you now know what foot to have in front.
Now that you have your front foot figuired out, it's time to drop a ski! Dropping is a ton easier than getting up on one because it doesn't take any extra strength or harder balancing skills. Drop your non dominant foot's ski and don't even worry about putting your foot into the holder of the other ski. Just relax and get a feel for the one ski balance. Once you have that down, move your bare foot next to your foot that is in the boot. Then when it is next to it, slowly move it back until you find the holder with your toes. Slip it in, ski away like a champ.
That's my best advice I can offer you, and it has worked with tons of my friends when they come up to my cabin.