Housewarming cards

These are some housewarming cards I made recently.  The only differences between them, aside from subtle size differences, are the color choices. 

I hope in time to learn more about proper blending with markers and I could use any tips on how to get every card the same size (when using 8 1/2 x 11 paper in the printer) as well as the exact placement of font/words for cards in MS Word docs.  I am rather challenged with these things. Please post a comment or send me an e-mail with any tips! Check out my profile for my e-mail address.