Dear aspirant, you can depict surprise ,innocence and jealousy from any colour or from emojis or any other materials drawn on the grid. There cannot be any one answer to this question as it has asked your perspective. There will be no right and wrong answer . You can make anything which depicts these feelings. To understand it better , you may have gone through these feelings earlier so you may take into account your experiences , how you felt , what were the things you liked and disliked more when you felt these emotions or which colour you found soothing or were getting more attracted to when you were going through these feelings. For instance

Surprise : can be depicted by making big eyes , mouth wide open, or by decorative birthday hat, etc.

Innocence : can be depicted by sweet little baby , flowers , heart , sweet don't know gesture emoji, . You can also depict it by pink colour or any other colour which you find suitable in this.

Jealousy : can be depicted by angry emoji or mean eyed emoji , dried flowers , unhappy emoji face , unsatisfied faced emoji, you can depict it by evil figures , or red or black colour, black heart, etc.