I now have over 50 teamwork and I was wondering if I can change my honorable to team work ribbon?

If you earn a rarer ribbon, your ribbon will be overwritten by the rarer one. As far as I remember, the rarity order is Helpful > Friendly > Teamwork > Honorable, with Helpful being the rarest.

You need to earn the Teamwork ribbon, and once you do it will change.

No way to manually change it

Hm, I was under the impression Helpful is rarer than Teamwork. However, it's certainly possible that I misremembered.

All the other 3 ribbons are obtained due to some combination of the 3 team types of honor. Honorable Opponent is the only that's "pure".

Also, the rarest ribbon you own is the one displayed, If it's displayin the Honorable Opponent one, it means you don't have any other.

to get the ribbon you need to have 20% of the time awarded per games you play to be awarded. if not you dont get it, and freinds only count as 1/4 of a award, so its much faster to get it from randoms.

Is there any way to see the total number of times you've gotten awards?

If you click the little person on the top-right of the client that takes you to your summoner profile, there will be displays of all four honors you have earlier. Four white icons with numbers above or below, forget which. It's near the middle/bottom of the page.