When you cut down trees make sure you seal ends with something so that they do not check i.e. split.
You can use latex paint, melted wax, anchor seal. Just get it done immediately. When you cut your call blanks ,cut them a little oversize because there will be shrinking and possible warping.
Next stack them and put stickers(small strips of wood) between the boards so air can move between the boards so they will dry.
If your wood dries too fast it will split. I have also soaked burl blanks in DNA overnight and wrapped the wood in newspaper and it has not checked on me. This will help speed up process but is expensive.
Btw, if you saw wood trees in winter there should be less moisture (sap) than the summer.
Hope this helps!