Most People want to install their own template on blog but theydon't know how to change blogger template in new blogger interface.. So it is not difficult to change the template ,there are just few step which are most easy, if anyone follow can change their template so keep follow my step.
Step1: Download Template
There are lots of blogger templates on the internet so download anyone you like most.
Step 2: Login To Your Blogger Account
If you already have a blogger account its good but if not then create one.
Step 3 : Go to Template Section
After ligin go to the template section of the blogger where you can change your blogger template.
Step 4: Click On Backup/Restore
then click on backup/restore which is apper on the top right corner
Step 5: Upload Template
Now first download your template you have already applied. then upload your template you want to install. Now thats all yoru template will be changed