As Rita commented that she couldn't work out the instructions, as she didn't have the board Leann used, here is a copy of my template especially for her (and anybody else).
Feel free to download it and print it out at 100%. The dotted lines are the scored fold lines, and the solid line is the line you cut.
This Template is for an A5 finished card.
This is what I did using my M&F Board and my Hougie Board.
a) score part of the way across the centre of the card on half A4 mark. Line 1
b) Then with a pencil I marked the score lines Nos2 & 3 up from one end on the long side. Then marked another score line No 4 the other side of the half A4 fold line. Then marked each end of the cut line between score line No 2 and score line No 4" . I made this line 1" from the long edge - but you could vary this.
I then scored the lines, so that they all met (on my Hougie Board) but any board would do, extending line 1 to reach the cut line mark. Finally I cut down the solid line.
Score Lines Nos 1, 2 and 4 are mountain folds - No 3 is a Valley fold.
Hope this helps.
Obviously you could change the size of the original cardstock to whatever size you prefer - but hopefully this gives you a basic guide.
Hope this makes sense and helps. (Tip: make a trial template out of copy paper first).