Oh Christmas Tree I designed this quilt (a variation of a log-cabin block) totally on Excel - a spreadsheet program. I calculated all the sized, seam allowances and yardage requirements dynamically so if I changes the basic square size, the changes would automatically be calculated for the entire quilt. The quilting is rather heavy - white stippling in the white background and then red and amber thread in the trees. The words to "Oh, Christmas Tree" are stitched in the borders.