5. Oxymoron #1:
When sewing out designs, DO NOT restrict the movement of the material - you will distort the design being sewn, HOWEVER: keep the thing lined up and square, i.e. top stays top and sides upright (not at an angle......:-))))
Or in practical terms - imagine the object that you are sewing on (material/shirt/pattern part etc) as being a small square that is sitting on top of the larger square of whatever it is that your 1630 is standing on, you have to keep all the sides of these two squares parallel (lined up).

A little hint about designs with both satin and straight stitches in them - the satin stitches will NOT cover the amount of material that they are SUPPOSE to do, whereas the straight stitches (single or tripple) will do JUST that. You have to help your 1630 compensate for the fact that it does not have a motorised hoop (like the dedicated embroidery machines) to move the design around with precision movements. Therefor push/pull when satin stitches are being sewn (to increase the space/distance covered) to get things to line up with the straight stitches (here you can push/pull to resist movement).

On rereading the above it is now as clear as muddy water!!! VBG!