Here are my tips on how you could improve your post, hope you like them:
You can center text and images by using the code "< center >Insert Text here< /center >"
You can create an horizontal line with the code "< hr >"
You can change the size of the text with "< h1 >Text< /h1 >" and you can change the number to be smaller. (You already got part of this)
You can create an empty line between pictures with < br >. Sometimes you must add it 2 times.
You also know the < div class="pull-right" > but I advise that you don't put pictures next to each other that don't match in size. Also, < br > doesn't work properly after this so use a < hr >.
There's many others but this are the main ones I'm using :)
I hope this was helpful! Keep up the good work and I'll check your next post :)
ps: I had to separate the < > from the code but it's all together.