I guess the way to ensure I have the time to play AND post is to plan out a few posts and then go play some more!
I subscribe to Mojo Monday who, every Monday, send me a new card sketch. Follow the sketch and upload your creation. A great challenge. Sometimes I get the card done and forget to upload, and sometimes I just run out of time in the week to create! It's a nice way to get a card done quickly.
Here is this week's sketch and my creation: