I saw a cake like this at our local bakery with my daughter and she asked me to duplicate it. This is what I came up with. It was actually pretty quick to decorate in comparison with some of the other cakes I've done, and it was nice that I only had to make a few colors.

It's in all butter cream frosting. The figurines I got from the Disney store some time ago(they come in a pack of several different figurines). I used tip 18 for the pumpkins and tip 2 for the rose bushes. Tip three for the roses. Tip 352(I think that's the one; it's the 'good' leaf tip) for the stems on the pumpkins and tip 21 for the border. I think the vines were done in tip 3 and in tip 102. Probably more details than you really wanted but I know I'm always wishing people would give more details on their cake pictures, so there you go!