Just looking at the seams, it appears that you are not taking a consistent 1/4" seam. There are several ways to fix this pretty block. One way is to make a bridge of tape for your fabric to push against when it is under the needle. Measure by putting your ruler under the needle and rolling it down until it sits on the 1/4" mark. Mark where 1'4" is on your face plate and make a mark. Now, using several pieces of masking tape or blue painter's tape, stack them up, keeping them exactly in line and on your 1'4" mark, until you have about 10 or so of them--a bridge that will allow you to guide your fabric along the tape. You should be able to sew a consistent 1/4" seam that way. Two: If that method doesn't work, go to the drug or grocery story and buy moleskin (you line your shoe heel with it or put it where your shoe rubs a sore spot. Using your rotary cutter and a ruler, cut a strip 1/4" wide. Peel the adhesive off and stick it on your face place 1/4" from the needle. This also will help you to sew a consistent seam. It will wear down, however, so you will need to check it periodically. You can, by the way, lift the strip of blue painter's tape and stick it on your sewing machine until you need it again. Three: On some machines there is a hole that you can screw in a seam guide which can be adjusted to seam width also. Good luck. Hope this answered your question.