One of the things that really helps me when I am paper piecing is matching the tick marks. I use these on foundation piecing to join the sections together and in freezer paper template piecing on every piece. I don't think I could join diagonal lines accurately without them in freezer piecing! On the Sew-Ichigo patterns you will find these red tick lines on the lines where sections join. You can see a cropped image of two pattern pieces below and their corresponding red ticks.
This is how I join foundation paper sections together. I place the seams together and push the pin straight through the end of the tick mark so it goes straight through the front...
and the point comes out in the matching place on the flip side.
I then pin at right angles to this to hold the seam. If it is a short seam I leave the vertical pins and just hold it tight all the way to the sewing machine foot.
This is the same pinning from a different angle.
You may prefer to sew those section seams without the paper- it does add bulk. You just trim the paper back to the edge of the pattern piece, the tick line is still there, a pin as before.
With freezer paper piecing, the technique is just the same; push through the tick line so that is comes out the other side...
On the corresponding tick mark.
I recently read a post at The Sewing Directory by Lynne of Lily's Quilts where she describes exactly the same process for quilt blocks, she uses the points in the block instead of ticks . It all leads to beautiful blocks, and that is what we are all aiming for!
I have added a print gadget to the bottom of all posts so you can choose a range of options to print out our tips and tutorials, handy! If you want the same gadget, you can find it here.