It's official! Our Lifetime shed building project is finished! A few weeks ago we added a wood "skirt" to the front of the wood platform to hide the gap underneath, to prevent critters from getting under our shed, and to make it more attractive. Since we have a wood fence around our yard, we bought two more fence boards and cut them into short pieces. We nailed them onto the platform and basically made a miniature fence along the bottom front of the shed. We then stained it to match the rest of our fencing. It turned out great! We used some of the rock that was left from building our house (and rock that we dug up in our yard when we built our shed) to build some landscaping beds around the shed. We planted a few pansies, and a bush, and - voila- we were done!
We originally built our Lifetime shed to get rid of some of the clutter on our patio and in our garage. So far, we've filled the 8'x5' shed with all of our lawn tools that were in the garage...lawn mower, weed eater, wheelbarrow, fertilizers etc. My husband loves having a place all his own to store his yard stuff. We knew beforehand that building a shed wouldn't entirely clean out our garage since we have so many bikes, strollers, and kids' toys that need to stay in the garage for easy access. However, before we built the shed, we were constantly climbing over bikes to get to shelves and yard tools and we had to move the strollers and toys out of the garage to get the lawn mower in and out. 
Now, thanks to our new shed, we finally have space in front of our workbench to work, and a clear path to easily walking to our shelves, sprinkler system control box, and trash cans!
One last side note... good intentions don't always work out so well. In addition to the rats we've had in our backyard, we've also found three possums living under our kids' sandbox! (Ugh. Remember, I don't do rodents!!!) We thought we had the shed platform completely closed in with the wood skirt in front and bricks and rocks on the sides so nothing could get under the shed. Wrong! Just this week, we noticed a hole under the front of the fence skirt where something has been digging to get under the shed.
Sigh. Great, the possums found a new hiding place. But, yesterday we happened to go out to the shed and heard a "meow". Turns out a neighborhood house cat that had been lost for over a week somehow made its new home under our shed! So, the neighbor was happy to get her cat back and we were happy not to have possums under our shed. (At least for now.) I hope you have better luck critter-proofing under your shed than we did! :)