Holy-moly, you got that gorgeous lighting effect using spray can?! I only use it ocassionally to give rhe illusion of make-up blush on my characters. This picture alone is useful enough to be an instructor on using MS Paint.
WOOAHH!! THIS IS CRAZY!!! but...really good you know?!?! It must have taken soo much dedication!! I admire you for that!!! well done!!! Although you deserve much more praise than "well done" ...super well done?!?
Hey, good luck in any thing else you decide to do..on paint ...and hey, are you Vietnamese?
the only thing i dont understand is, if you used photoshop to do the blurring.... then why not just use the pencil tool in photoshop to do the pixel stuff instead of using paint? exactly the same almost, just that colour pallet managment would be easier and you wouldnt need to constantly bring the pixture back and fourth between the two apps.. not to mention layers would be handy. though saying this, looks like you didnt need all that stuff anyway