Before sewing your fabric, do you -
Pre-wash it? Yes- most often just a soak in cool or warm water with non-machine washing soap like woolite, rince it in clean water, then a quick dip in starchy water.
Pre-dry it? Yes- air dry (no machine) or iron dry if almost dry. I don't iron dry soppy wet fabric.
Pre-starch it? yes, (see above)
Pre-iron it? yes, see above
Pre- cut it? yes, but only after the main blocks are cut for the purpose the fabric was bought. After main use, it is considered scrap, and I cut according to my personal scrap procedures.