Help with Orchids please.

[LoopyLou]

Hello,

Im new here and was wondering if anyone can give me some advice on looking after my orchids.

I have been looking online at different websites but they can have come conflicting advice.

I have 2 phalaenopsis which I have had for a while, one I saved from my mum as it was dyeing the leaves were all wrinkly and droopy. Im not sure if it can be saved but the leaves are a lot more plump and green, so im assuming its responding?

My 2nd phal is growing a new leaf and is doing well although it has recently developed a mark on one leaf. It started off white and has now gone brown. I think its just sunburn but am not sure. I have attached a pic below.

I water these once a week and spray them with Orchid mist twice a week. Is this the correct thing to do?

My 3rd I bought at the weekend it a Miltoniopsis It was £1.99 in the sale as the flowers and the stem had died off. I think the plant is healthy just a little droopy from being in the shop. Please can anyone give me some advice on how to look after it? I really want it thrive and do well.

Hope i have put this in the right place am still finding my way around. Thanks