Subjunctive with Adverbial Clauses
Can someone please just let me know if I am using these right'
7 Answers
Ha ha he he.
Yes, please leave your original so we can learn from it, too.
Could you please not erase your first attempts. I well know that they can be less than flattering to one's ego, but the rest of us can't learn along with you if we only see the corrected version and not what was there originally.
Believe me. We're all in the same boat. You cannot make any more or sillier mistakes than I have, so don't feel embarrassed. It's a learning site. Mistakes are not only forgiven, they are appreciated. They provide an opportunity for all of us to learn (except maybe Lazarus, I suppose he's to be pitied; he doesn't get the satisfaction of learning something new). 
You have hhmdirocco's option, plus:
Me parece que...
Creo que...
Seguro que...
Estoy seguro de que...
In this context ... Me imagino que ... . (Supongo que ... .)
Again, a native speaker could best answer this.
what should i chance a mi juico to? BTW thank you so much
También iré a la zapatería a comprar los zapatos para cada uno. Después (,) compraré [del]todo[/del] comida, bebidas, y decoraciones. Para terminar (,) [del]yo[/del] volveré a mi casa. [del]Yo[/del] llamaré a todos mis amigos cuando [del]yo[/del] vuelva a (mi) casa. La fiesta es en nuestra nueva casa en una colina.
A mi juicio, a mi madre le encantará esta sorpresa. Será una sorpresa a menos que ella llegue temprano a (la) casa. Gritaremos 'FELIZ CUMPLEAÿOS? en cuanto ella nos vea. Todos nuestros amigos y familiares vendrán con tal de que no tengan otros planes ya.
The four subordinate clauses are correct, all in subjunctive. I added a few corrections and suggestions.
By the way, "a mi juicio" sounds a bit too formal, and I'd say "... vendrán a menos que tengan planes ya".
I don't see any problem with your use of the subjunctive here. There are some other things that could use a little help, though. I will let some native speakers help you with that.
