1		2		3
4		5		6
7		8		9
10		11		12
13		14		15
16		17		18
19		20		21
22		23		24
25		26		27
28		29		30

Caps for 10-12 by awakencordy and cap for icon 28 by oxoniensis. If you want a tutorial for a specific icon, I might indulge.
oh, and 10-12 are Goblet of Fire icons, but I don't think they are particularly spoilery at all.