Learning japanese – tounge placement/what to do with my mouth

Hello everyone! I'm currently on the journey of learning japanese. I'm in the early stages of learning hiragana and katakana.

I was wondering if anyone has any resources on how to pronounce the sounds like native Japanese speaker. Or any reasons about where to place the tongue, what to do with the lips etc.

The main reason I'm asking for help with this is I'm current watching some Japanese tv shows to expose myself to the spoken language. The main
protagonist name is 'kotoko' (romaji since I haven't learnt hiragana too well yet nor do I know if there a kanji for her name).

I'm really struggling to say her name due to not knowing where to place my tongue/what to do with my mouth when trying to say her name.

Thanks everyone for helping who replies!