Are they doomed?

I am not the greatest gardener. I do pretty ok if the said plants are growing out of doors, but when it comes to indoor plants, potted plants, i usually steer clear. I forget to water them, or water them too much, or forget they are there all together(ie, the plant on my porch that was a gift, oh the pressure). So, you might ask yourself, what was I thinking making terrariums. Well, the short answer is that they were way too charming and pretty for me to forget about. I spotted instructions for them here and here, among others, and could not get them out of my head. I finally found these jars at Target and a plan took shape. We rounded up all the "ingredients" and i just dove right in....because over thinking it could kill the whole project. Chris set up a improvised gardening area in the middle of the driveway on saw horses and plywood...good husband. Avery was my helper and we got things underway. I have to say that right now it is a resounding success. They look as pretty as i hoped they would and they even have a nice sunny home on the windowsill in our kitchen. Now you may check back in and see how they grow or don't grow over the next few weeks. That is to be seen. I understand that over watering is the main killer of all terrariums....since i am not so good at remembering to water, these could be a bad gardeners dream!!! And, no, those are not real critters in the terrariums! One of the charms of a terrarium is making them look like a tiny other world...Mitchie chose a dinosaur in his so his plants look like a prehistoric forest. The pictures below are the inside of one of mine(lizard) and Avery's(turtle). She did a great job.