Sample Workflow Help

I'm new to git.  I need some help refactoring my workflow.

Here is my setup.

There are three of us working on one server, each with individual repositories (clones) on the server (this is important because our test environment can't work from branches, it needs to work from actual files)

so, there is the 1_1 folder (main repo)
1_1issac for me
1_1kasey and 1_1josh

So, here is my sample workflow

--Begin doc

I'm Issac.  I'm working on some calendar code, on my mac, it's at ~/1_1issac/admin/pageType/calendar/admin.php (this is a clone of my repository)

I've made some local edits, to put it on the server I now do this (on my local terminal)

    cd ~/1_1issac #my root directory

    git commit -a #find all of my changes and commit them to the local repository

    git push ssh://<server>/<repoDir>/1_1issac

Now, I've made a new icon at /admin/pageType/calendar/icon.png

git add admin/pageType/calendar/icon.png

git commit -a

git push ssh://<server>/<repoDir>/1_1issac

I e-mail kasey "Kasey, I've put a temp icon in the 1_1issac folder under admin/pageType/calendar/icon.png could you give me a better one?"

He does, first he jumps on the server and updates his current working files with the things that I'm working on:

ssh <server>
cd <repoDir>/1_1kasey
git pull ../1_1issac
exit
# your back to your regular environment now
cd <wherever the stuff you normally work on it>

git pull ssh://<server>/<repoDir>/1_1kasey

#edit my crapy paint drawing

git commit -a

git push ssh://<server>/<repoDir>/1_1kasey

--end

Please tell me what I'm doing wrong (if anything) and what I could be doing better.  I've been using git for about two days, and I'm trying to teach my team to as well.