I wanted to make my first cutout card in MTC, I used a flower from the ttf font KalocsaiFlowers and joined and welded to my card base. I created the scallop rectangle out of shapes and also welded the flower on to it, so it would line up when I put it together. The card is pretty plain, but it's a good way to learn the program. Steph @ Crafting in the Rain has a great tutorial on a flower window card, here is the link, http://craftingintherain.blogspot.com/2011/03/flower-window-card.html, go check it out, she also has a mtc file for it!!
Here is my mtc file for this card, Flower Cutout Card
Here is the inside