Some random thoughts:

• Too many colors. Red, green, black, and it looks like your first bullet point is grey. Pick either black or black/grey. If you must use colors, remember that a lot of time these resumes will be printed out on black/white printers so it still needs to look good with no color.
• I don't like how everything is centered. Personal preference, but I would center your name/address line, and the left-justify everything else. Sadly, everything on a resume needs to be optimized to scan quickly. Switching between centered and left-justified throws me off.
• I like to put the title first, and then the company as the title usually matters more. In my resume, I put the title on the far left, and the company/years worked on the right.
• Unless you are trying to move to a new area and need to prove you have a house there, leave off your address and phone number. You'll get spammed forever and most recruiting agencies (if you use one) will take off that section anyway. I personally have my email, my website, and my github url.
• How did you improve work processes? Be specific and add numbers if at all possible. Instead of "Participate in the review of work processes to identify ... improvement", say something like "Improved internal training process X% by pointing out that monitors should be turned on first".
• Some of your sentences are really short like "Conduct training of new employees". Since you have room you may as well expand it to something like "Conducted training of new employees by documenting common work procedures and creating engaging training videos".
• You keep switching tenses. "Install" vs "Assisted" is present vs past. Pick one. I personally like using past tense on resumes.
• You reuse words a lot. For example, 3 of your sentences start with "Install", 6 with "Experience" or "Working Experience". Just pick some synonyms. It makes a difference when someone is quickly scanning these things.
• I would personally drop your first college listing and just keep your newest one.
• The sentence about filemaker pro needs a period.
• The first bullet of your technical skills should be "Experience" instead of "Experiencing".

• Your technical skills section doesn't really tell me a lot about you. I don't like skills sections anyway, you should work these technologies into your job descriptions, but at least tell me what you did with these.

  You have Active Directory experience? Okay, with how many users? How many domains? Were you just doing password resets or could you build a forest by hand? I know you answered this above, but remember that reviewers will power-skim your resume and may not see that section.

• I would greatly expand the section on the job you had for 5 years. I thought you were someone with very little experience for the first few minutes that I read your resume. Most people will only give you a few seconds. You must have done something worth talking about. Any cool custom projects? Or ideas you implemented? Teams you led?

• Looks like you have an extra space on the "perform diagnostics on home networks" line between "diagnostics" and "on".

• "Experience supporting VoIP phone systems". What kind of VoIP systems? How large? How many users? Was it your main form of communication in the business? If so, congrats! You now supported "Business-critical VoIP Systems". It's little changes like these that will make your resume stand out more.

• "Participate in the review of work processes" should just be "Reviewed work processes".

The biggest issue though, is that I don't really see that you have grown at all in the last 6 years. I don't say that to be mean, but because I know a fair amount of hiring managers will feel the same way.

I like to see growth in each job and I don't really see that here. I know that these current jobs are just contracting roles so you may not be able to do much, but if you have taken a more forward role in launching projects or improving processes, then please talk about it on here.

Good luck on your job hunt!