Orchid help please

Hi, I was given an orchid and I am successfully on my second lot of flowers now, I was told to water with rain water once a fortnight, which I have been doing and I'm very pleased with myself. They are on the kitchen windowsill in the bright light with a lot of sun as well. I have 3 shoots coming from the bottom so do I just clips these up with the little miniature hair clips you get or as I have 2 large stems shall I wind them to them I'm so pleased I got this far I don't want to kill the plant off, I don't know the lifespan of these pretty flowers, so don't want to ruin them I hope the pictures show what I mean TIA