Hi angst, 1a -take 'kid's starter' from synonym for prefers, then its partner goes in the grid. 10a is another paired one - cleu is straightforward, then partner goes in grid.
3d is a 'normal' clue - incredibly convoluted (i had lots of help from this forum) - you need a soundalike for 'highly' (yes really), then think of the only famous person with that name (discounting the distance runner), and you've got your 'admirer'! - and if you can be bothered, the letter-play is to do with 29a See what I mean about convoluted? Very clever though.
23a - another paired answer, No.10 is usual cross-word fodder in synonym for 'union' reversed. Usual partner goes in the grid.
I suspect that like me you've found it tricky separating the clue from the letters you see in the grid for the paired answers - I would never have got there without the help of some clever folk on here :-)