Brand Development for personal Branding

My variations ranged in terms of colour and work to reflect the main sections of my concept. 

I sued a simpel grid format to layout the letterforms 

I really dislike this version and varioon. I think it looks un proffeisonal and very child like. I would prefer more of a mature and profesionalooking design 

Te back of the business card works with the 4 main colur.s tHE TRIPLEX PRINT WILL FINIHS OFF THE SUQRE MADE UP BY THE COLOURS. 

I quite like my final design - although the grey kind of washed out the brightness of the colour s- maybe i should delete th ebackgroudn.