Below are the best sites for increasing the DA:

https://telegra.ph/How-to-become-a-freelance-engineer-04-05
https://justpaste.it/32k5l
https://git.sicom.gov.co/snippets/998
http://www.musicrush.com/jameswilliams/blog/86103/how-to-become-a-freelance-engineer-and-find-assignments
https://6058cf2d02e38.site123.me/blog/freelance-engineer-mission-how-to-find-one
http://bigdatastack-tasks.ds.unipi.gr/snippets/222
http://www.lg102-ciscvaio1.cs.hku.hk/snippets/1826
https://gl-bd.veturis.com/snippets/91
https://truxgo.net/blogs/43426/54798/training-courses-to-become-independent-engineers
http://blog.ratebe.com.au/36638/Freelance-engineer%3A-How-to-find-new-clients.html
http://biskopsgarden.blogspot.com/2015/12/nu-kor-vi.html?showComment=1617677425796#c7940622949218467318
https://byannabanks.blogspot.com/2014/07/writerly-insecurity.html?showComment=1617678201127#c5040978429676819651
https://www.mtbproject.com/user/201075473/james-williams
https://www.expatriates.com/cls/47847066.html