I use the Slidelock too, more for safety but it really makes my cutting much more accurate. I have the Go and Go Baby and use them for most of my cutting.

I would take a rotary cutting class. This had to be taken in some LQS's prior to a beginning quilt class. Cutting does improve as you go so if you start doing it more often you will get better. Also I block my blocks now which has made my piecing more accurate. For strips I was not accurate until i got the june tailor shape cut. I has vastly improved my skills and I highly suggest that ruler much cheaper than buying an accuquilt or sizzix cutting system for accuracy. I also have those little plastic dots on all my rulers, and my long ruler has the lipped edge which I love

Have you considered using one of those June Taylor Shape & Cut things? I really struggled with cutting at first, and this saved my life. I cut fearlessly now....as long as my rotary blade is sharp, that is. :)

Dina

Hmmm, guess that suggestion got made already. Blush... It is a good suggestion though.

Dina

Folding your fabric correctly is the first key to getting straight cuts. Make sure there is no 'bubble' at the fold and then smooth and press. Put sandpaper or rubber dots on the corner of your ruler. Or, get a couple of spring clamps to hold your ruler in place - or all of those! Another tool you might want to check is the Quilt Cut. It's a bit spendy but holds your fabric tightly clamped in place, all the rulers are an integral part of the unit so they don't slip at all. Can do straight or just about any angle cut you might need.