I'm going to start you off by teaching you how to make smooth jumps
Please watch this video and hopefully it will help you out a bit when it comes to making smooth jumps
By the way this is only my way of doing it and I'm sure there are many other ways but I find this method the best



Okay so basically you just make a jump, ride it and then while you are still in the air, you can quickly pause the game and make the landing right where your guy is, where he would land.
Also another tip that I showed you in the video is when you are making lines try to keep them nice and round (not squarish) and that's another way to keep it smooth
And one last thing is when your making the landing always try to keep it declined because if you make a horizontal line as the landing its not going to be very smooth and fun

Example Track:

Use the Mountain Bike only

-18 1i 18 1i,-1d -1r -1a -3i -o -1r -8 -3h 0 -1o,q -3n q -1n,5 -3k 1h -3l,1p -3g 1s -1m 2n -22 1r -2i 2o -2v 1p -3h,16 1j 2a 1i 3g 1f 4q 19 65 v 7i d 8u -f a4 -1l b4 -34,h9 -1n hs -j is n k1 1r lj 2v n5 3u or 4t qh 5p s7 6h tu 72 vk 7d 11a 7h 12v 7e 14h 75,14c 75 15a 6n 16a 68 17f 5k 18k 4s 19n 42 1ar 2v 1bt 1i 1cr -4,1r3 r 1rm 1t 1sg 36 1tq 4l 1ve 5t 21e 76 23o 8i 260 9r 287 at 2ac bo 2cf cd 2eg cr 2gh d2 2ig d1 2ke co 2ma c8 2o0 bf 2ph aa 2qs 8r 2s0 76 2st 5c 2tj 3d 2u1 1b,330 5 33t 1b 351 2q 369 44 37s 5e 39k 6l 3bg 7s 3dc 93 3f7 a6 3h1 b3 3ir bq 3kl cc 3me co 3o7 cs 3q0 cr 3rn cl 3tb c9 3ut bp 40o aq 42b 9j 43m 7v 44f 6i 456 51 45p 3d,4e4 -8a 4f1 -76 4gc -60 4i6 -4r 4jm -42 4l5 -38 4mk -2d 4o4 -1n 4pm -14 4r7 -l 4ta -8 4vd -4 519 -f 532 -16 54l -25 562 -3b 575 -4t 57t -6s 588 -8h,5bh -9p 5c8 -8j 5d5 -7a 5ed -5r 5fo -4o 5h8 -3m 5it -2i 5kp -1i 5mm -q 5oi -7 5qe 6 5s8 f 5u3 i 5vt h 61m c 63g 3##B 610 -3 35,B 60v -3 2n,B 60q -1 2o,B 610 -1 2o,B 60t -1 2t,B 613 -1 30,B 610 1 2q,B 62v -5 88,B 630 -5 8c,B 62v -5 8e,B 633 -4 8p,B 630 -5 8e,B 638 -4 8g,B 633 -3 8g,B 638 -2 8g,B 636 -2 8e,B 63b -2 8e,B 636 -4 8e,B 637 -4 8e,B 638 -4 8e