Are you afraid of that? it is like mixing Uppercase and lowercase in english. Use kanji if japanese word has corresponding kanji. use katakana for foreign words. otherwise, it will be so confusing and hard to read.

Yeah its possible haha

Ooooh Yeaaah that's what im doing start with hiragana then katakana and after it kanji .. arigato ^^

I think to master Hiragana and Katakana first then Kanji would be the easiest way for you.さいしょに、ひらがなとかたかな、そしてかんじをマスターするのが、いちばんかんたんなほうほうだと、おもいます。がんばってくださいね。

Yeaah I guess I just Have to try with it but it still hard to deal with all of it in the same sentence .. :s By the waay thnks for your advice and i will work hard On it