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(+1)

you can fit your character in canvas of 64x64. so you just put him in the middle of 64x64 square and do it for each sprite. It also will be easier to cut sprite sheet if al lof them are in the same square of 64x64 ...or even 128x128 . that is not so important . but it must be even. Because now ,well...see yourself 

(+1)

Ok will do. Sorry about that.