Hi there,
I read about LetterMo / Incowrimo at postcrossing blog and accepted the challenge, and enjoying this I started a small project also.
Community made art trough the mail, do you want to participate?
I send you a blank sheet or started with something, you add whatever you want to it and send to the next participant (of your choice, could be your next postcrosser for example - if they like postcard in an envelope 
).
I create an instagram profile to post the pictures: @smailartproj
https://www.instagram.com/smailartproj/
If like to participate 
send me a DM or message. I will be glad to add you!!