i scan my hand-drawn pattern pieces and trace them using a free vector-editing program called inkscape. its like a watered down version of adobe illustrator, but has plenty of features for the simple line drawing i need to do. i draw a 1"x1" square on my pieces to make sure the scaling is accurate. this program allows me to save my finished drawings as pdf files. i keep two versions- an svg file that i can edit and a pdf that is my "final draft". if i make any changes to the svg file, i just overwrite the old pdf file.
i use "foxtab PDF converter" to save word documents as pdf files- its a tiny program that is actually a printer driver- to convert to pdf, i go to the print menu, chose the pdf converter as my printer from the drop down menu, and the file is converted and saved to a folder on my desktop. it sounds a little odd, but it works.
then, i use "pdf merge" to combine all my files into one document- pattern pieces and photo-tutorials.
it all sounds kind of cumbersome, and i tried lots of trial versions and limited use freeware before i found these programs, but the time i invested has saved me hundreds of dollars in software purchases.
this listing has a sample picture of my tutorials in the 4th photo. they're pretty sexy documents, if i do say so myself. let me know if you have any questions or if i can help in any other way :)
https://www.etsy.com/listing/112172170/waldorf-doll-clothes-pdf-sewing-pattern