Formal:
* Soy estudiante y soy de España. (This is the most literal translation and is appropriate for formal settings.)
* Soy un estudiante español. (This emphasizes your nationality.)
Informal:
* Soy estudiante y vengo de España. (This is a bit more casual and implies you are currently in a different country.)
* Soy un estudiante de España. (This is also informal but emphasizes your origin.)
To add context, you can also say:
* Soy estudiante de [Subject of study] en España. (e.g., "Soy estudiante de ingeniería en España." - I am an engineering student in Spain.)
The best way to say it will depend on the specific context and the level of formality required.