I would not worry too much about winning or losing, particularly by a small margin.
Some comments.
As always, no guarantee that I have not goofed.
(;ST[2]AP[GOWrite:2.2.21]FF[4]CA[ISO8859-1]SZ[9]GM[1]RU[JP]KM[6.5]PM[2]HA[0]FG[259:]BS[0]PB[Player]PW[COMLv3]GN[Champion Go]DT[2013-10-09 14\:59\:34]VW[]RE[W+2.5]WS[3]
;B[ee]TL[1,0]
;TL[0,0]W[eg]
;B[ec]TL[0,0]
;TL[0,0]W[gf]
;B[cf]TL[1,0]
;TL[0,0]W[fd]
;B[fe]TL[2,0]
;TL[2,0]W[ge]
;B[fg]TL[9,0]
;TL[2,0]W[ff]
;B[ef]TL[1,0]
;TL[1,0]W[ed]
(
;C[*** See variation.]B[dg]TL[0,0]
;C[*** Huge play for White. The Black stone on the top side is obviously misplaced. End of comments.]TL[2,0]W[dd]
;B[fc]TL[3,0]
;TL[1,0]W[gc]
;B[gb]TL[1,0]
;TL[0,0]W[eh]
;B[dh]TL[6,0]
;TL[0,0]W[fh]
;B[hc]TL[3,0]
;TL[1,0]W[gd]
;B[bd]TL[4,0]
;TL[1,0]W[dc]
;B[db]TL[0,0]
;TL[0,0]W[cb]
;B[ea]TL[1,0]
;TL[0,0]W[bc]
;B[cd]TL[3,0]
;TL[0,0]W[cc]
;B[hd]TL[3,0]
;TL[0,0]W[de]
;B[df]TL[1,0]
;TL[0,0]W[ce]
;B[be]TL[0,0]
;TL[0,0]W[ad]
;B[af]TL[0,0]
;TL[0,0]W[ac]
;B[he]TL[8,0]
;TL[0,0]W[hf]
;B[if]TL[3,0]
;TL[0,0]W[ig]
;B[ie]TL[2,0]
;TL[0,0]W[hh]
;B[ei]TL[4,0]
;TL[0,0]W[fi]
;B[di]TL[3,0]
;TL[0,0]W[ae]
;B[bf]TL[0,0]
;TL[0,0]W[ca]
;B[fa]TL[1,0]
;TL[0,0]W[eb]
;B[fb]TL[2,0]
;TL[0,0]W[hb]
;B[ib]TL[3,0]
;TL[0,0]W[ic]
;B[ha]TL[2,0]
;TL[0,0]W[da]
;B[bh]TL[7,0]
;TL[0,0]W[eb]
;B[gh]TL[8,0]
;TL[0,0]W[gg]
;B[db]TL[1,0]
;TL[0,0]W[gi]
;B[eb]TL[1,0]
;TL[0,0]W[tt]
;B[tt]TL[0,0]
)
(
;C[*** Very important play.]B[dd]
)
)
Main focus: Don't just let your opponent rip your position apart.
(;ST[2]AP[GOWrite:2.2.21]FF[4]CA[ISO8859-1]SZ[9]GM[1]RU[JP]KM[6.5]PM[2]HA[0]FG[259:]BS[0]PB[Player]PW[COMLv3]GN[Champion Go]DT[2013-10-08 23\:33\:36]VW[]RE[W+2.5]WS[3]
;B[ee]TL[0,0]
;TL[0,0]W[fg]
;B[dg]TL[4,0]
;TL[0,0]W[dc]
;B[gf]TL[4,0]
;TL[0,0]W[ce]
;B[fc]TL[1,0]
;TL[1,0]W[gg]
;B[hg]TL[2,0]
;TL[1,0]W[hh]
;B[hf]TL[1,0]
;TL[1,0]W[ef]
;B[df]TL[2,0]
;TL[0,0]W[de]
(
;C[*** This is a complicated position. See variation.]B[ed]TL[2,0]
;TL[0,0]W[ff]
;B[dd]TL[3,0]
;TL[1,0]W[cd]
;B[ec]TL[0,0]
;TL[1,0]W[bg]
;B[ch]TL[2,0]
;TL[0,0]W[eh]
;B[db]TL[1,0]
;TL[1,0]W[cc]
;B[cb]TL[1,0]
;TL[0,0]W[bh]
;B[ih]TL[3,0]
;TL[0,0]W[gh]
;B[bc]TL[3,0]
;TL[0,0]W[bd]
;B[ab]TL[1,0]
;TL[0,0]W[ad]
;B[fe]TL[2,0]
;TL[0,0]W[cg]
;B[ig]TL[11,0]
;TL[0,0]W[hi]
;B[ac]TL[3,0]
;TL[0,0]W[cf]
;B[ii]TL[1,0]
;TL[0,0]W[tt]
;B[tt]TL[0,0]
)
(
;B[eg]
(
;W[ff]
;C[*** Now it comes down to a fight between the two groups on the bottom side. The fight seems to favor Black, even though it is White's move.]B[fe]
;W[eh]
;B[dh]
(
;W[fh]
;B[gi]
;W[hi]
;C[*** White has only one eye.]B[ih]
;W[ch]
;B[ei]
;W[cg]
;B[fi]
;W[cf]
;B[gh]
)
(
;W[gh]
;B[fi]
;W[ei]
;B[di]
;W[fh]
;B[ih]
;W[gi]
;B[bh]
(
;W[bg]
;B[bf]
;W[be]
;B[ag]
)
(
;W[bf]
;B[bg]
;W[ag]
;B[ah]
;W[bi]
;B[cf]
;W[be]
;B[ch]
)
)
(
;W[fi]
;B[gh]
;W[fh]
;B[ih]
;W[gi]
;B[bh]
;W[bf]
;B[bg]
;W[ci]
;B[di]
;W[bi]
;B[cf]
;W[be]
;B[ch]
)
)
(
;W[eh]
;B[dh]
;W[fi]
;C[*** Bigger than it looks. Only White has a weak group.]B[ff]
(
;W[ih]
;B[di]
;C[*** White lives. ]W[fh]
;C[*** Big.]B[eb]
;W[db]
;B[bf]
;W[be]
;C[*** Black wins.]B[bg]
)
(
;W[eb]
;C[*** Kills the White group.]B[di]
;W[gc]
;B[gb]
;W[fb]
;B[hc]
;W[gd]
;B[hb]
;W[fd]
;B[hd]
;W[bg]
;C[*** Black wins. See continuation for how White cannot live in the bottom right corner.]B[bh]
;W[ih]
;B[hi]
;W[gi]
;B[fh]
;W[gh]
;B[ei]
)
)
)
)
The 9x9 is a very tactical game, and when White cuts, the resulting position is difficult. Black needs to engage the enemy at that point. One thing that begins to stand out, I think, is how big connecting can be. Another thing to note is how big the diagonal play on the second line can be when either side could make that play.
It is just ca. 30 moves... It can't be so difficult.