There are two ways on making a nice and cute blockquote.

so, let's discover this two blockquote tutorial.

First method  :

 a) login > dashboard > desugn > edit HTML.

 b) tick expand widget template

 c) Ctrl + F and look for this code

 d) Then copy the following code after/below ".post blockquote {"

e) then save,..

However, not every blog has that .postblockquote code. so, there are other method.

Second method are like this:

 a) go to edit html

 b)tick expand widget template

 c)Ctrl +F and look for this code:

 d) copy the code below and paste before/above the code :  ]]></b:skin>

.post blockquote {
 background: url(URL BACKGROUND);
    border-top: 1px dashed #FF0080;
    border-left: 1px dashed #FF0080;
    border-right: 1px dashed #FF0080;
    border-bottom: 1px dashed #FF0080;
}

e)save :)) 

p/s: you can change the colour if you want here ..

      The background url you can put in any background url that you like :)  

Here are some example:     backgroundlabs , Just click on the image , click download image.. and  click on copy image url. :) But it's better if you download the image and upload it in photobucket .