15 take carefull note of the predominate colurs for the nose, hat, trim and bobble join them up to form letters - the answer is 4 letters long
20 find the linking word for each row , when you have all 5 look at the label on the top sheeps backside, the blank will give you the position for the letter that makes up the answer formed from the 5 letters.
stuck on 23 and 16 too, have a feeling that the bike one is something to do with a dartboard - i have tried totalling up all 5 sets of 3 shots but that isnt the answer. Also the spotted jersey is for 'king of the hill' in the tour de france but i dont think that has anything to do with it.