Use the magic wand tool with paint.net and then use the delete key and you have a transparent background. Paint.net is like an extended version of MSPaint (easy to use, not too many tools, simpler interface, etc). If you want to go Pro just download the free trial of Photoshop (They'll probably make you download CC 2014) or GIMP.
Here is my admin match for Lavender. However, in my tired state I accidentally recorded my admin replay again instead of my grunt match vs Rhodeo, so I don't have that one. Apologies.
I have all of these available for breeding and then trade. I can get them up to 5 iv. Reply what you want and your offer. https://mail.google.com/mail/u/0/s/?view=att&th=147ff4e6d1361ae3&attid=0.1&disp=attd&safe=1&zw