It is standard to heat up an oven to 350 for the correct temp, also I made these Last night at that heat 
 
        
                    
             
        
        
        
A is Line. 
C is Form. 
E is Space. 
G isColor. 
K is Movement. 
L is Pattern. 
R is Unity. 
T is Elements of Art. 
U is Principle of Art. 
hope i helped!! good luck :)
        
                    
             
        
        
        
Nice emojis
Anyway peace out 
Have a great day