There's actually some advices for you to be ultra sneaky while crossdressing. It's not like i speak from experience or anything,BAKA! 

1) Avoid raising suspicion that you do that.

2) Close your doors with a key.

3) If you hear footsteps coming to your door but your door is unlocked then hide stuff as fast as possible(speedrun strats) under a blanket and pretend to be sleepy or tired and chilling under a blanket.

4) The less people in home when crossdressing the less human variables you have to deal with,the one pestering you the most should be working or just merely outside of the house when you're crossdressing,others are second priority human randomness that its better to avoid with step 2.

5) Hide your crossdressing clothes as obscurely as possible so when discovered you can say you already found them there and wondered what they were(curiosity excuse,works best with pokerface or disinterested face).

6) When panic mode kicks in as you hear the door opened,do not be scared,that is deadly when your crossdressing hobby is about to be discovered. Instead use the excuse in point 5.

7) When you fail to do point 1 and people suspect your weird behaviour and you hear it,you should make excuse of a science experiment or anything else that can easily explain that you hide your crossdressing hobby. If you fail to make it look believe-able then F for you.

You heard that? Thats all the support i can provide you \*tsundere blush\*,so dont worry and fight-o!