Here are my block units for Rummy (from Monique Dillard's new book Fat Quarter Winners), all laid out ready to stitch. One thing that you will need to concern yourself with if you make this block, is getting those seam abutments lined up perfectly. This can be an issue that drives quilters nuts, but I have a couple of tips that may help.
See where my ripper is pointing? These are the points that are going to go wrong on you, if anything is. Because of the strong light/dark contrast of my fabrics, if these seams are not perfectly lined up, it will show up like a sore thumb. Seriously, if the seams are off by a thread, it will show and look uneven and make you cry.
So. Take a deep breath. Line up your block units and have a calm look. Put the two units together, and place a pin *precisely* where the two seams meet. Put your pin straight in.
Turn the pieces over and look at the back side. The pin should be coming out in exactly the corresponding point--right on the seam line and at the intersection where the two seams meet.
Can you see that? Look close. If the pin doesn't come out at exactly the point where the seam is, jimmy it around until it does. There is only ONE sweet spot, and you need to find it. This is SO important.
See where my pin is? See how the sewing machine needle is coming down exactly in that same hole that the pin is making? That is what you need to do. Yes, it is fiddly, but you will be so happy that the seams abut perfectly and you don't have to do any ripping, you will thank me for this persnickettiness.
Ideally, you do not want this seam to be off by a single thread, or you will see it and be unhappy. It is an easy thing to get right, but you have got to pin.
Here is a photo of the whole stitching line, with my pins in place. See those U shaped pins? I love them for those places where seam allowances come together. The U shape holds the seam allowances in place on both sides of the seam, so you don't get any of that fold over nonsense. I want my seams to lie nice and flat, with no unruly flop over. Really, is that a pet peeve of yours too? I just hate it when my seams get sewn in the wrong direction. These pins do the trick!
For another look at how to get your seam allowances to behave, check out Lisa's blog post last week. She presses her seams open (another technique entirely). Go have a look. You will not ever have seen a more beautiful block in your life. And it is the BACK SIDE of her block. She is amazing, truly.
I hope these little tips were helpful to you. I am a believer in pinning, as you may have guessed. I admire folks who don't seem to need to do it, but pins are my little fail safe devices! I think I may sound like a broken record to my daughter Sara, as I am always nagging her to pin more. Pin or don't pin, as is your pleasure. However, if I couldn't pin, I would be an unhappy camper! My little crutches.